diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/README.md b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/README.md
new file mode 100644
index 000000000000..c6eb5ca10a26
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/README.md
@@ -0,0 +1,273 @@
+
+
+# negaFibonaccif
+
+> Compute the nth [negaFibonacci number][fibonacci-number] as a single-precision floating-point number.
+
+
+
+The [negaFibonacci numbers][fibonacci-number] are the integer sequence
+
+
+
+```math
+0, 1, -1, 2, -3, 5, -8, 13, -21, 34, -55, 89, -144, \ldots
+```
+
+
+
+
+
+The sequence is defined by the recurrence relation
+
+
+
+```math
+F_{n-2} = F_{n} - F_{n-1}
+```
+
+
+
+
+
+which yields
+
+
+
+```math
+F_{-n} = (-1)^{n+1} F_n
+```
+
+
+
+
+
+with seed values `F_0 = 0` and `F_{-1} = 1`.
+
+
+
+
+
+
+
+## Usage
+
+```javascript
+var negafibonaccif = require( '@stdlib/math/base/special/negafibonaccif' );
+```
+
+#### negafibonaccif( n )
+
+Computes the nth [negaFibonacci number][fibonacci-number] as a single-precision floating-point number.
+
+```javascript
+var v = negafibonaccif( 0 );
+// returns 0
+
+v = negafibonaccif( -1 );
+// returns 1
+
+v = negafibonaccif( -2 );
+// returns -1
+
+v = negafibonaccif( -3 );
+// returns 2
+
+v = negafibonaccif( -36 );
+// returns -14930352
+```
+
+If `n < -36`, the function returns `NaN`, as larger [negaFibonacci numbers][fibonacci-number] cannot be safely represented in [single-precision floating-point format][ieee754].
+
+```javascript
+var v = negafibonaccif( -37 );
+// returns NaN
+```
+
+If not provided a nonpositive integer value, the function returns `NaN`.
+
+```javascript
+var v = negafibonaccif( -3.14 );
+// returns NaN
+
+v = negafibonaccif( 1 );
+// returns NaN
+```
+
+If provided `NaN`, the function returns `NaN`.
+
+```javascript
+var v = negafibonaccif( NaN );
+// returns NaN
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+## Examples
+
+
+
+```javascript
+var negafibonaccif = require( '@stdlib/math/base/special/negafibonaccif' );
+
+var v;
+var i;
+
+for ( i = 0; i > -37; i-- ) {
+ v = negafibonaccif( i );
+ console.log( v );
+}
+```
+
+
+
+
+
+
+
+* * *
+
+
+
+## C APIs
+
+
+
+
+
+
+
+
+
+
+
+
+
+### Usage
+
+```c
+#include "stdlib/math/base/special/negafibonaccif.h"
+```
+
+#### stdlib_base_negafibonaccif( n )
+
+Computes the nth [negaFibonacci number][fibonacci-number] as a single-precision floating-point number.
+
+```c
+float out = stdlib_base_negafibonaccif( 0 );
+// returns 0.0f
+
+out = stdlib_base_fibonaccif( -1 );
+// returns 1.0f
+```
+
+The function accepts the following arguments:
+
+- **n**: `[in] int32_t` input value.
+
+```c
+float stdlib_base_negafibonaccif( const int32_t n );
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+### Examples
+
+```c
+#include "stdlib/math/base/special/negafibonaccif.h"
+#include
+#include
+
+int main( void ) {
+ int32_t i;
+ float v;
+
+ for ( i = 0; i > -37; i-- ) {
+ v = stdlib_base_negafibonaccif( i );
+ printf( "negafibonaccif(%d) = %f\n", i, v );
+ }
+}
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+[fibonacci-number]: https://en.wikipedia.org/wiki/Fibonacci_number
+
+[ieee754]: https://en.wikipedia.org/wiki/IEEE_754-1985
+
+
+
+
+
+
+
+
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/benchmark.js b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/benchmark.js
new file mode 100644
index 000000000000..9bed14fac94a
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/benchmark.js
@@ -0,0 +1,307 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var bench = require( '@stdlib/bench' );
+var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
+var roundf = require( '@stdlib/math/base/special/roundf' );
+var sqrtf = require( '@stdlib/math/base/special/sqrtf' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var absf = require( '@stdlib/math/base/special/absf' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var PHI = require( '@stdlib/constants/float32/phi' );
+var pkg = require( './../package.json' ).name;
+var NEGAFIBONACCIF = require( './../lib/negafibonaccif.json' );
+var negafibonaccif = require( './../lib' );
+
+
+// VARIABLES //
+
+var SQRT_5 = sqrtf( 5.0 );
+
+
+// MAIN //
+
+bench( pkg, function benchmark( b ) {
+ var x;
+ var y;
+ var i;
+
+ x = discreteUniform( 100, -36.0, 0.0 );
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ y = negafibonaccif( x[ i % 100 ] );
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ }
+ b.toc();
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+});
+
+bench( pkg+'::analytic', function benchmark( b ) {
+ var x;
+ var y;
+ var i;
+
+ function negafibonaccif( n ) {
+ var an = absf( n );
+ return pow( -1.0, an+1 ) * roundf( pow( PHI, an ) / SQRT_5 );
+ }
+
+ x = discreteUniform( 100, -36.0, 0.0 );
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ y = negafibonaccif( x[ i % 100 ] );
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ }
+ b.toc();
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+});
+
+bench( pkg+'::table', function benchmark( b ) {
+ var x;
+ var y;
+ var i;
+
+ x = discreteUniform( 100, -36.0, 0.0 );
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ y = NEGAFIBONACCIF[ absf( x[ i % 100 ] ) ];
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ }
+ b.toc();
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+});
+
+bench( pkg+'::naive_recursion', function benchmark( b ) {
+ var x;
+ var y;
+ var i;
+
+ function negafibonaccif( n ) {
+ if ( n === 0 ) {
+ return n;
+ }
+ if ( n === -1 ) {
+ return 1;
+ }
+ return negafibonaccif( n+2 ) - negafibonaccif( n+1 );
+ }
+
+ x = discreteUniform( 100, -36.0, 0.0 );
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ y = negafibonaccif( x[ i % 100 ] );
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ }
+ b.toc();
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+});
+
+bench( pkg+'::recursion_memoized', function benchmark( b ) {
+ var arr;
+ var N;
+ var x;
+ var y;
+ var i;
+
+ arr = new Array( 37 );
+ arr[ 0 ] = 0;
+ arr[ 1 ] = 1;
+ arr[ 2 ] = -1;
+ N = 2;
+
+ function negafibonaccif( n ) {
+ var an = absf( n );
+ if ( an <= N ) {
+ return arr[ an ];
+ }
+ arr[ an ] = negafibonaccif( n+2 ) - negafibonaccif( n+1 );
+ return arr[ an ];
+ }
+
+ x = discreteUniform( 100, -36.0, 0.0 );
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ y = negafibonaccif( x[ i % 100 ] );
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ }
+ b.toc();
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+});
+
+bench( pkg+'::naive_iterative', function benchmark( b ) {
+ var x;
+ var y;
+ var i;
+
+ function negafibonaccif( n ) {
+ var arr;
+ var an;
+ var i;
+
+ an = absf( n );
+
+ arr = new Array( an+1 );
+ arr[ 0 ] = 0;
+ arr[ 1 ] = 1;
+ arr[ 2 ] = -1;
+ for ( i = 3; i <= an; i++ ) {
+ arr[ i ] = arr[ i-2 ] - arr[ i-1 ];
+ }
+ return arr[ an ];
+ }
+
+ x = discreteUniform( 100, -36.0, 0.0 );
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ y = negafibonaccif( x[ i % 100 ] );
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ }
+ b.toc();
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+});
+
+bench( pkg+'::iterative', function benchmark( b ) {
+ var x;
+ var y;
+ var i;
+
+ function negafibonaccif( n ) {
+ var an;
+ var a;
+ var b;
+ var c;
+ var i;
+
+ an = absf( n );
+
+ a = 1;
+ b = -1;
+ for ( i = 3; i <= an; i++ ) {
+ c = a - b;
+ a = b;
+ b = c;
+ }
+ return b;
+ }
+
+ x = discreteUniform( 100, -36.0, 0.0 );
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ y = negafibonaccif( x[ i % 100 ] );
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ }
+ b.toc();
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+});
+
+bench( pkg+'::iterative_memoized', function benchmark( b ) {
+ var arr;
+ var N;
+ var x;
+ var y;
+ var i;
+
+ arr = new Array( 37 );
+ arr[ 0 ] = 0;
+ arr[ 1 ] = 1;
+ arr[ 2 ] = -1;
+ N = 2;
+
+ function negafibonaccif( n ) {
+ var an;
+ var i;
+
+ an = absf( n );
+ if ( an > N ) {
+ for ( i = N; i <= an; i++ ) {
+ arr[ i ] = arr[ i-2 ] - arr[ i-1 ];
+ }
+ N = an;
+ }
+ return arr[ an ];
+ }
+
+ x = discreteUniform( 100, -36.0, 0.0 );
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ y = negafibonaccif( x[ i % 100 ] );
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ }
+ b.toc();
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+});
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/benchmark.native.js b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/benchmark.native.js
new file mode 100644
index 000000000000..212a779f501a
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/benchmark.native.js
@@ -0,0 +1,61 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var resolve = require( 'path' ).resolve;
+var bench = require( '@stdlib/bench' );
+var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+var pkg = require( './../package.json' ).name;
+
+
+// VARIABLES //
+
+var negafibonaccif = tryRequire( resolve( __dirname, './../lib/native.js' ) );
+var opts = {
+ 'skip': ( negafibonaccif instanceof Error )
+};
+
+
+// MAIN //
+
+bench( pkg+'::native', opts, function benchmark( b ) {
+ var x;
+ var y;
+ var i;
+
+ x = discreteUniform( 100, -36.0, 0.0 );
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ y = negafibonaccif( x[ i % 100 ] );
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ }
+ b.toc();
+ if ( isnanf( y ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+});
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/c/Makefile b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/c/Makefile
new file mode 100644
index 000000000000..d564e8b2d6f9
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/c/Makefile
@@ -0,0 +1,127 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2025 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#/
+
+
+# VARIABLES #
+
+ifndef VERBOSE
+ QUIET := @
+else
+ QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+ OS := WINNT
+endif
+endif
+endif
+endif
+
+# Define the program used for compiling C source files:
+ifdef C_COMPILER
+ CC := $(C_COMPILER)
+else
+ CC := gcc
+endif
+
+# Define the command-line options when compiling C files:
+CFLAGS ?= \
+ -std=c99 \
+ -O3 \
+ -Wall \
+ -pedantic
+
+# Determine whether to generate position independent code ([1][1], [2][2]).
+#
+# [1]: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options
+# [2]: http://stackoverflow.com/questions/5311515/gcc-fpic-option
+ifeq ($(OS), WINNT)
+ fPIC ?=
+else
+ fPIC ?= -fPIC
+endif
+
+# List of C targets:
+c_targets := benchmark.out
+
+
+# RULES #
+
+#/
+# Compiles C source files.
+#
+# @param {string} [C_COMPILER] - C compiler
+# @param {string} [CFLAGS] - C compiler flags
+# @param {(string|void)} [fPIC] - compiler flag indicating whether to generate position independent code
+#
+# @example
+# make
+#
+# @example
+# make all
+#/
+all: $(c_targets)
+
+.PHONY: all
+
+#/
+# Compiles C source files.
+#
+# @private
+# @param {string} CC - C compiler
+# @param {string} CFLAGS - C compiler flags
+# @param {(string|void)} fPIC - compiler flag indicating whether to generate position independent code
+#/
+$(c_targets): %.out: %.c
+ $(QUIET) $(CC) $(CFLAGS) $(fPIC) -o $@ $< -lm
+
+#/
+# Runs compiled benchmarks.
+#
+# @example
+# make run
+#/
+run: $(c_targets)
+ $(QUIET) ./$<
+
+.PHONY: run
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean:
+ $(QUIET) -rm -f *.o *.out
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/c/benchmark.c b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/c/benchmark.c
new file mode 100644
index 000000000000..7077f1b6a3cb
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/c/benchmark.c
@@ -0,0 +1,151 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include
+#include
+#include
+#include
+#include
+
+#define NAME "negafibonaccif::naive_recursion"
+#define ITERATIONS 100
+#define REPEATS 3
+
+/**
+* Prints the TAP version.
+*/
+static void print_version( void ) {
+ printf( "TAP version 13\n" );
+}
+
+/**
+* Prints the TAP summary.
+*
+* @param total total number of tests
+* @param passing total number of passing tests
+*/
+static void print_summary( int total, int passing ) {
+ printf( "#\n" );
+ printf( "1..%d\n", total ); // TAP plan
+ printf( "# total %d\n", total );
+ printf( "# pass %d\n", passing );
+ printf( "#\n" );
+ printf( "# ok\n" );
+}
+
+/**
+* Prints benchmarks results.
+*
+* @param elapsed elapsed time in seconds
+*/
+static void print_results( double elapsed ) {
+ double rate = (double)ITERATIONS / elapsed;
+ printf( " ---\n" );
+ printf( " iterations: %d\n", ITERATIONS );
+ printf( " elapsed: %0.9f\n", elapsed );
+ printf( " rate: %0.9f\n", rate );
+ printf( " ...\n" );
+}
+
+/**
+* Returns a clock time.
+*
+* @return clock time
+*/
+static double tic( void ) {
+ struct timeval now;
+ gettimeofday( &now, NULL );
+ return (double)now.tv_sec + (double)now.tv_usec/1.0e6;
+}
+
+/**
+* Generates a random number on the interval [0,1).
+*
+* @return random number
+*/
+static float rand_float( void ) {
+ int r = rand();
+ return (float)r / ( (float)RAND_MAX + 1.0f );
+}
+
+/**
+* Computes the nth negaFibonacci number.
+*
+* @param n negaFibonacci number to compute
+* @return negaFibonacci number
+*/
+int negafibonacci( int n ) {
+ if ( n == 0 ) {
+ return 0;
+ }
+ if ( n == -1 ) {
+ return 1;
+ }
+ return negafibonacci( n+2 ) - negafibonacci( n+1 );
+}
+
+/**
+* Runs a benchmark.
+*
+* @return elapsed time in seconds
+*/
+static double benchmark( void ) {
+ double elapsed;
+ int x[ 100 ];
+ double t;
+ int y;
+ int i;
+
+ for ( i = 0; i < 100; i++ ) {
+ x[ i ] = (int)floor( 36.0f * rand_float() );
+ }
+
+ t = tic();
+ for ( i = 0; i < ITERATIONS; i++ ) {
+ y = negafibonacci( -x[ i % 100 ] );
+ if ( y == 7 ) {
+ printf( "should not return 7\n" );
+ break;
+ }
+ }
+ elapsed = tic() - t;
+ if ( y == 7 ) {
+ printf( "should not return 7\n" );
+ }
+ return elapsed;
+}
+
+/**
+* Main execution sequence.
+*/
+int main( void ) {
+ double elapsed;
+ int i;
+
+ // Use the current time to seed the random number generator:
+ srand( time( NULL ) );
+
+ print_version();
+ for ( i = 0; i < REPEATS; i++ ) {
+ printf( "# c::%s\n", NAME );
+ elapsed = benchmark();
+ print_results( elapsed );
+ printf( "ok %d benchmark finished\n", i+1 );
+ }
+ print_summary( REPEATS, REPEATS );
+}
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/c/native/Makefile b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/c/native/Makefile
new file mode 100644
index 000000000000..a4bd7b38fd74
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/c/native/Makefile
@@ -0,0 +1,146 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2025 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+ QUIET := @
+else
+ QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+ OS := WINNT
+endif
+endif
+endif
+endif
+
+# Define the program used for compiling C source files:
+ifdef C_COMPILER
+ CC := $(C_COMPILER)
+else
+ CC := gcc
+endif
+
+# Define the command-line options when compiling C files:
+CFLAGS ?= \
+ -std=c99 \
+ -O3 \
+ -Wall \
+ -pedantic
+
+# Determine whether to generate position independent code ([1][1], [2][2]).
+#
+# [1]: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options
+# [2]: http://stackoverflow.com/questions/5311515/gcc-fpic-option
+ifeq ($(OS), WINNT)
+ fPIC ?=
+else
+ fPIC ?= -fPIC
+endif
+
+# List of includes (e.g., `-I /foo/bar -I /beep/boop/include`):
+INCLUDE ?=
+
+# List of source files:
+SOURCE_FILES ?=
+
+# List of libraries (e.g., `-lopenblas -lpthread`):
+LIBRARIES ?=
+
+# List of library paths (e.g., `-L /foo/bar -L /beep/boop`):
+LIBPATH ?=
+
+# List of C targets:
+c_targets := benchmark.out
+
+
+# RULES #
+
+#/
+# Compiles source files.
+#
+# @param {string} [C_COMPILER] - C compiler (e.g., `gcc`)
+# @param {string} [CFLAGS] - C compiler options
+# @param {(string|void)} [fPIC] - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} [INCLUDE] - list of includes (e.g., `-I /foo/bar -I /beep/boop/include`)
+# @param {string} [SOURCE_FILES] - list of source files
+# @param {string} [LIBPATH] - list of library paths (e.g., `-L /foo/bar -L /beep/boop`)
+# @param {string} [LIBRARIES] - list of libraries (e.g., `-lopenblas -lpthread`)
+#
+# @example
+# make
+#
+# @example
+# make all
+#/
+all: $(c_targets)
+
+.PHONY: all
+
+#/
+# Compiles C source files.
+#
+# @private
+# @param {string} CC - C compiler (e.g., `gcc`)
+# @param {string} CFLAGS - C compiler options
+# @param {(string|void)} fPIC - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} INCLUDE - list of includes (e.g., `-I /foo/bar`)
+# @param {string} SOURCE_FILES - list of source files
+# @param {string} LIBPATH - list of library paths (e.g., `-L /foo/bar`)
+# @param {string} LIBRARIES - list of libraries (e.g., `-lopenblas`)
+#/
+$(c_targets): %.out: %.c
+ $(QUIET) $(CC) $(CFLAGS) $(fPIC) $(INCLUDE) -o $@ $(SOURCE_FILES) $< $(LIBPATH) -lm $(LIBRARIES)
+
+#/
+# Runs compiled benchmarks.
+#
+# @example
+# make run
+#/
+run: $(c_targets)
+ $(QUIET) ./$<
+
+.PHONY: run
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean:
+ $(QUIET) -rm -f *.o *.out
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/c/native/benchmark.c b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/c/native/benchmark.c
new file mode 100644
index 000000000000..20633d6f34bb
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/c/native/benchmark.c
@@ -0,0 +1,136 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/math/base/special/negafibonaccif.h"
+#include
+#include
+#include
+#include
+#include
+
+#define NAME "negafibonaccif"
+#define ITERATIONS 100
+#define REPEATS 3
+
+/**
+* Prints the TAP version.
+*/
+static void print_version( void ) {
+ printf( "TAP version 13\n" );
+}
+
+/**
+* Prints the TAP summary.
+*
+* @param total total number of tests
+* @param passing total number of passing tests
+*/
+static void print_summary( int total, int passing ) {
+ printf( "#\n" );
+ printf( "1..%d\n", total ); // TAP plan
+ printf( "# total %d\n", total );
+ printf( "# pass %d\n", passing );
+ printf( "#\n" );
+ printf( "# ok\n" );
+}
+
+/**
+* Prints benchmarks results.
+*
+* @param elapsed elapsed time in seconds
+*/
+static void print_results( double elapsed ) {
+ double rate = (double)ITERATIONS / elapsed;
+ printf( " ---\n" );
+ printf( " iterations: %d\n", ITERATIONS );
+ printf( " elapsed: %0.9f\n", elapsed );
+ printf( " rate: %0.9f\n", rate );
+ printf( " ...\n" );
+}
+
+/**
+* Returns a clock time.
+*
+* @return clock time
+*/
+static double tic( void ) {
+ struct timeval now;
+ gettimeofday( &now, NULL );
+ return (double)now.tv_sec + (double)now.tv_usec / 1.0e6;
+}
+
+/**
+* Generates a random number on the interval [0,1).
+*
+* @return random number
+*/
+static float rand_float( void ) {
+ int r = rand();
+ return (float)r / ( (float)RAND_MAX + 1.0f );
+}
+
+/**
+* Runs a benchmark.
+*
+* @return elapsed time in seconds
+*/
+static double benchmark( void ) {
+ int32_t x[ 100 ];
+ double elapsed;
+ double t;
+ double y;
+ int i;
+
+ for ( i = 0; i < 100; i++ ) {
+ x[ i ] = (int32_t)floor( 36.0f * rand_float());
+ }
+
+ t = tic();
+ for ( i = 0; i < ITERATIONS; i++ ) {
+ y = stdlib_base_negafibonaccif( -x[ i % 100 ] );
+ if ( y != y ) {
+ printf( "should not return NaN\n" );
+ break;
+ }
+ }
+ elapsed = tic() - t;
+ if ( y != y ) {
+ printf( "should not return NaN\n" );
+ }
+ return elapsed;
+}
+
+/**
+* Main execution sequence.
+*/
+int main( void ) {
+ double elapsed;
+ int i;
+
+ // Use the current time to seed the random number generator:
+ srand( time( NULL ) );
+
+ print_version();
+ for ( i = 0; i < REPEATS; i++ ) {
+ printf( "# c::native::%s\n", NAME );
+ elapsed = benchmark();
+ print_results( elapsed );
+ printf( "ok %d benchmark finished\n", i + 1 );
+ }
+ print_summary( REPEATS, REPEATS );
+}
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/julia/REQUIRE b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/julia/REQUIRE
new file mode 100644
index 000000000000..98645e192e41
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/julia/REQUIRE
@@ -0,0 +1,2 @@
+julia 1.5
+BenchmarkTools 0.5.0
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/julia/benchmark.jl b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/julia/benchmark.jl
new file mode 100755
index 000000000000..d66af4f571d0
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/benchmark/julia/benchmark.jl
@@ -0,0 +1,156 @@
+#!/usr/bin/env julia
+#
+# @license Apache-2.0
+#
+# Copyright (c) 2025 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import BenchmarkTools
+using Printf
+
+# Benchmark variables:
+name = "negafibonaccif::naive_recursion";
+repeats = 3;
+
+"""
+ print_version()
+
+Prints the TAP version.
+
+# Examples
+
+``` julia
+julia> print_version()
+```
+"""
+function print_version()
+ @printf( "TAP version 13\n" );
+end
+
+"""
+ print_summary( total, passing )
+
+Print the benchmark summary.
+
+# Arguments
+
+* `total`: total number of tests
+* `passing`: number of passing tests
+
+# Examples
+
+``` julia
+julia> print_summary( 3, 3 )
+```
+"""
+function print_summary( total, passing )
+ @printf( "#\n" );
+ @printf( "1..%d\n", total ); # TAP plan
+ @printf( "# total %d\n", total );
+ @printf( "# pass %d\n", passing );
+ @printf( "#\n" );
+ @printf( "# ok\n" );
+end
+
+"""
+ print_results( iterations, elapsed )
+
+Print benchmark results.
+
+# Arguments
+
+* `iterations`: number of iterations
+* `elapsed`: elapsed time (in seconds)
+
+# Examples
+
+``` julia
+julia> print_results( 1000000, 0.131009101868 )
+```
+"""
+function print_results( iterations, elapsed )
+ rate = iterations / elapsed
+
+ @printf( " ---\n" );
+ @printf( " iterations: %d\n", iterations );
+ @printf( " elapsed: %0.9f\n", elapsed );
+ @printf( " rate: %0.9f\n", rate );
+ @printf( " ...\n" );
+end
+
+"""
+ benchmark()
+
+Run a benchmark.
+
+# Notes
+
+* Benchmark results are returned as a two-element array: [ iterations, elapsed ].
+* The number of iterations is not the true number of iterations. Instead, an 'iteration' is defined as a 'sample', which is a computed estimate for a single evaluation.
+* The elapsed time is in seconds.
+
+# Examples
+
+``` julia
+julia> out = benchmark();
+```
+"""
+function benchmark()
+ # Define a NegaFibonacci recurrence relation:
+ function nfib( n )
+ if n == 0
+ return 0;
+ end
+ if n == -1
+ return 1;
+ end
+ return nfib( n+2 ) - nfib( n+1 );
+ end
+
+ # Benchmark:
+ t = BenchmarkTools.@benchmark $nfib( -floor( 36.0*rand() ) ) samples=1e6
+
+ # Compute the total "elapsed" time and convert from nanoseconds to seconds:
+ s = sum( t.times ) / 1.0e9;
+
+ # Determine the number of "iterations":
+ iter = length( t.times );
+
+ # Return the results:
+ [ iter, s ];
+end
+
+"""
+ main()
+
+Run benchmarks.
+
+# Examples
+
+``` julia
+julia> main();
+```
+"""
+function main()
+ print_version();
+ for i in 1:repeats
+ @printf( "# julia::%s\n", name );
+ results = benchmark();
+ print_results( results[ 1 ], results[ 2 ] );
+ @printf( "ok %d benchmark finished\n", i );
+ end
+ print_summary( repeats, repeats );
+end
+
+main();
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/binding.gyp b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/binding.gyp
new file mode 100644
index 000000000000..68a1ca11d160
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/binding.gyp
@@ -0,0 +1,170 @@
+# @license Apache-2.0
+#
+# Copyright (c) 2025 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# A `.gyp` file for building a Node.js native add-on.
+#
+# [1]: https://gyp.gsrc.io/docs/InputFormatReference.md
+# [2]: https://gyp.gsrc.io/docs/UserDocumentation.md
+{
+ # List of files to include in this file:
+ 'includes': [
+ './include.gypi',
+ ],
+
+ # Define variables to be used throughout the configuration for all targets:
+ 'variables': {
+ # Target name should match the add-on export name:
+ 'addon_target_name%': 'addon',
+
+ # Set variables based on the host OS:
+ 'conditions': [
+ [
+ 'OS=="win"',
+ {
+ # Define the object file suffix:
+ 'obj': 'obj',
+ },
+ {
+ # Define the object file suffix:
+ 'obj': 'o',
+ }
+ ], # end condition (OS=="win")
+ ], # end conditions
+ }, # end variables
+
+ # Define compile targets:
+ 'targets': [
+
+ # Target to generate an add-on:
+ {
+ # The target name should match the add-on export name:
+ 'target_name': '<(addon_target_name)',
+
+ # Define dependencies:
+ 'dependencies': [],
+
+ # Define directories which contain relevant include headers:
+ 'include_dirs': [
+ # Local include directory:
+ '<@(include_dirs)',
+ ],
+
+ # List of source files:
+ 'sources': [
+ '<@(src_files)',
+ ],
+
+ # Settings which should be applied when a target's object files are used as linker input:
+ 'link_settings': {
+ # Define libraries:
+ 'libraries': [
+ '<@(libraries)',
+ ],
+
+ # Define library directories:
+ 'library_dirs': [
+ '<@(library_dirs)',
+ ],
+ },
+
+ # C/C++ compiler flags:
+ 'cflags': [
+ # Enable commonly used warning options:
+ '-Wall',
+
+ # Aggressive optimization:
+ '-O3',
+ ],
+
+ # C specific compiler flags:
+ 'cflags_c': [
+ # Specify the C standard to which a program is expected to conform:
+ '-std=c99',
+ ],
+
+ # C++ specific compiler flags:
+ 'cflags_cpp': [
+ # Specify the C++ standard to which a program is expected to conform:
+ '-std=c++11',
+ ],
+
+ # Linker flags:
+ 'ldflags': [],
+
+ # Apply conditions based on the host OS:
+ 'conditions': [
+ [
+ 'OS=="mac"',
+ {
+ # Linker flags:
+ 'ldflags': [
+ '-undefined dynamic_lookup',
+ '-Wl,-no-pie',
+ '-Wl,-search_paths_first',
+ ],
+ },
+ ], # end condition (OS=="mac")
+ [
+ 'OS!="win"',
+ {
+ # C/C++ flags:
+ 'cflags': [
+ # Generate platform-independent code:
+ '-fPIC',
+ ],
+ },
+ ], # end condition (OS!="win")
+ ], # end conditions
+ }, # end target <(addon_target_name)
+
+ # Target to copy a generated add-on to a standard location:
+ {
+ 'target_name': 'copy_addon',
+
+ # Declare that the output of this target is not linked:
+ 'type': 'none',
+
+ # Define dependencies:
+ 'dependencies': [
+ # Require that the add-on be generated before building this target:
+ '<(addon_target_name)',
+ ],
+
+ # Define a list of actions:
+ 'actions': [
+ {
+ 'action_name': 'copy_addon',
+ 'message': 'Copying addon...',
+
+ # Explicitly list the inputs in the command-line invocation below:
+ 'inputs': [],
+
+ # Declare the expected outputs:
+ 'outputs': [
+ '<(addon_output_dir)/<(addon_target_name).node',
+ ],
+
+ # Define the command-line invocation:
+ 'action': [
+ 'cp',
+ '<(PRODUCT_DIR)/<(addon_target_name).node',
+ '<(addon_output_dir)/<(addon_target_name).node',
+ ],
+ },
+ ], # end actions
+ }, # end target copy_addon
+ ], # end targets
+}
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/img/equation_negafibonacci_fibonacci.svg b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/img/equation_negafibonacci_fibonacci.svg
new file mode 100644
index 000000000000..4c79febb4e15
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/img/equation_negafibonacci_fibonacci.svg
@@ -0,0 +1,36 @@
+
\ No newline at end of file
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/img/equation_negafibonacci_recurrence_relation.svg b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/img/equation_negafibonacci_recurrence_relation.svg
new file mode 100644
index 000000000000..7fa6352d483d
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/img/equation_negafibonacci_recurrence_relation.svg
@@ -0,0 +1,33 @@
+
\ No newline at end of file
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/img/equation_negafibonacci_sequence.svg b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/img/equation_negafibonacci_sequence.svg
new file mode 100644
index 000000000000..3fe150d2e720
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/img/equation_negafibonacci_sequence.svg
@@ -0,0 +1,70 @@
+
\ No newline at end of file
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/repl.txt b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/repl.txt
new file mode 100644
index 000000000000..4f9de6d10d9f
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/repl.txt
@@ -0,0 +1,51 @@
+
+{{alias}}( n )
+ Compute the nth negaFibonacci number as a single-precision floating-point
+ number.
+
+ The negaFibonacci numbers follow the recurrence relation
+
+ F_{n-2} = F_{n} - F_{n-1}
+
+ with seed values F_0 = 0 and F_{-1} = 1.
+
+ If `|n|` is greater than `36`, the function returns `NaN` as larger
+ negaFibonacci numbers cannot be accurately represented due to limitations of
+ single-precision floating-point format.
+
+ If not provided a non-positive integer value, the function returns `NaN`.
+
+ If provided `NaN`, the function returns `NaN`.
+
+ Parameters
+ ----------
+ n: integer
+ Input value.
+
+ Returns
+ -------
+ y: integer
+ NegaFibonacci number.
+
+ Examples
+ --------
+ > var y = {{alias}}( 0 )
+ 0
+ > y = {{alias}}( -1 )
+ 1
+ > y = {{alias}}( -2 )
+ -1
+ > y = {{alias}}( -3 )
+ 2
+ > y = {{alias}}( -4 )
+ -3
+ > y = {{alias}}( -37 )
+ NaN
+ > y = {{alias}}( -38 )
+ NaN
+ > y = {{alias}}( NaN )
+ NaN
+
+ See Also
+ --------
+
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/types/index.d.ts b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/types/index.d.ts
new file mode 100644
index 000000000000..0af2e28d3a0e
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/types/index.d.ts
@@ -0,0 +1,74 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+// TypeScript Version: 4.1
+
+/**
+* Compute the nth negaFibonacci number as a single-precision floating-point number.
+*
+* ## Notes
+*
+* - The negaFibonacci numbers follow the recurrence relation `F_{n-2} = F_{n} - F_{n-1}` with seed values `F_0 = 0` and `F_{-1} = 1`.
+* - If `|n|` is greater than `36`, the function returns `NaN` as larger negaFibonacci numbers cannot be accurately represented due to limitations of single-precision floating-point format.
+* - If not provided a non-positive integer value, the function returns `NaN`.
+*
+* @param n - the negaFibonacci number to compute
+* @returns negaFibonacci number
+*
+* @example
+* var y = negafibonaccif( 0 );
+* // returns 0
+*
+* @example
+* var y = negafibonaccif( -1 );
+* // returns 1
+*
+* @example
+* var y = negafibonaccif( -2 );
+* // returns -1
+*
+* @example
+* var y = negafibonaccif( -3 );
+* // returns 2
+*
+* @example
+* var y = negafibonaccif( -4 );
+* // returns -3
+*
+* @example
+* var y = negafibonaccif( -5 );
+* // returns 5
+*
+* @example
+* var y = negafibonaccif( -6 );
+* // returns -8
+*
+* @example
+* var y = negafibonaccif( NaN );
+* // returns NaN
+*
+* @example
+* var y = negafibonaccif( -3.14 );
+* // returns NaN
+*/
+declare function negafibonaccif( n: number ): number;
+
+
+// EXPORTS //
+
+export = negafibonaccif;
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/types/test.ts b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/types/test.ts
new file mode 100644
index 000000000000..afa0d2e1a065
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/docs/types/test.ts
@@ -0,0 +1,44 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+import negafibonaccif = require( './index' );
+
+
+// TESTS //
+
+// The function returns a number...
+{
+ negafibonaccif( -8 ); // $ExpectType number
+}
+
+// The compiler throws an error if the function is provided a value other than a number...
+{
+ negafibonaccif( true ); // $ExpectError
+ negafibonaccif( false ); // $ExpectError
+ negafibonaccif( null ); // $ExpectError
+ negafibonaccif( undefined ); // $ExpectError
+ negafibonaccif( '5' ); // $ExpectError
+ negafibonaccif( [] ); // $ExpectError
+ negafibonaccif( {} ); // $ExpectError
+ negafibonaccif( ( x: number ): number => x ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided insufficient arguments...
+{
+ negafibonaccif(); // $ExpectError
+}
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/examples/c/Makefile b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/examples/c/Makefile
new file mode 100644
index 000000000000..25ced822f96a
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/examples/c/Makefile
@@ -0,0 +1,146 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2025 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+ QUIET := @
+else
+ QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+ OS := WINNT
+endif
+endif
+endif
+endif
+
+# Define the program used for compiling C source files:
+ifdef C_COMPILER
+ CC := $(C_COMPILER)
+else
+ CC := gcc
+endif
+
+# Define the command-line options when compiling C files:
+CFLAGS ?= \
+ -std=c99 \
+ -O3 \
+ -Wall \
+ -pedantic
+
+# Determine whether to generate position independent code ([1][1], [2][2]).
+#
+# [1]: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options
+# [2]: http://stackoverflow.com/questions/5311515/gcc-fpic-option
+ifeq ($(OS), WINNT)
+ fPIC ?=
+else
+ fPIC ?= -fPIC
+endif
+
+# List of includes (e.g., `-I /foo/bar -I /beep/boop/include`):
+INCLUDE ?=
+
+# List of source files:
+SOURCE_FILES ?=
+
+# List of libraries (e.g., `-lopenblas -lpthread`):
+LIBRARIES ?=
+
+# List of library paths (e.g., `-L /foo/bar -L /beep/boop`):
+LIBPATH ?=
+
+# List of C targets:
+c_targets := example.out
+
+
+# RULES #
+
+#/
+# Compiles source files.
+#
+# @param {string} [C_COMPILER] - C compiler (e.g., `gcc`)
+# @param {string} [CFLAGS] - C compiler options
+# @param {(string|void)} [fPIC] - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} [INCLUDE] - list of includes (e.g., `-I /foo/bar -I /beep/boop/include`)
+# @param {string} [SOURCE_FILES] - list of source files
+# @param {string} [LIBPATH] - list of library paths (e.g., `-L /foo/bar -L /beep/boop`)
+# @param {string} [LIBRARIES] - list of libraries (e.g., `-lopenblas -lpthread`)
+#
+# @example
+# make
+#
+# @example
+# make all
+#/
+all: $(c_targets)
+
+.PHONY: all
+
+#/
+# Compiles C source files.
+#
+# @private
+# @param {string} CC - C compiler (e.g., `gcc`)
+# @param {string} CFLAGS - C compiler options
+# @param {(string|void)} fPIC - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} INCLUDE - list of includes (e.g., `-I /foo/bar`)
+# @param {string} SOURCE_FILES - list of source files
+# @param {string} LIBPATH - list of library paths (e.g., `-L /foo/bar`)
+# @param {string} LIBRARIES - list of libraries (e.g., `-lopenblas`)
+#/
+$(c_targets): %.out: %.c
+ $(QUIET) $(CC) $(CFLAGS) $(fPIC) $(INCLUDE) -o $@ $(SOURCE_FILES) $< $(LIBPATH) -lm $(LIBRARIES)
+
+#/
+# Runs compiled examples.
+#
+# @example
+# make run
+#/
+run: $(c_targets)
+ $(QUIET) ./$<
+
+.PHONY: run
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean:
+ $(QUIET) -rm -f *.o *.out
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/examples/c/example.c b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/examples/c/example.c
new file mode 100644
index 000000000000..1b0e5d3a3ffc
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/examples/c/example.c
@@ -0,0 +1,31 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/math/base/special/negafibonaccif.h"
+#include
+#include
+
+int main( void ) {
+ int32_t i;
+ float v;
+
+ for ( i = 0; i > -37; i-- ) {
+ v = stdlib_base_negafibonaccif( i );
+ printf( "negafibonaccif(%d) = %f\n", i, v );
+ }
+}
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/examples/index.js b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/examples/index.js
new file mode 100644
index 000000000000..288c2d0a9eed
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/examples/index.js
@@ -0,0 +1,29 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+var negafibonaccif = require( '@stdlib/math/base/special/negafibonaccif' );
+
+var v;
+var i;
+
+for ( i = 0; i > -37; i-- ) {
+ v = negafibonaccif( i );
+ console.log( v );
+}
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/include.gypi b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/include.gypi
new file mode 100644
index 000000000000..ecfaf82a3279
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/include.gypi
@@ -0,0 +1,53 @@
+# @license Apache-2.0
+#
+# Copyright (c) 2025 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# A GYP include file for building a Node.js native add-on.
+#
+# Main documentation:
+#
+# [1]: https://gyp.gsrc.io/docs/InputFormatReference.md
+# [2]: https://gyp.gsrc.io/docs/UserDocumentation.md
+{
+ # Define variables to be used throughout the configuration for all targets:
+ 'variables': {
+ # Source directory:
+ 'src_dir': './src',
+
+ # Include directories:
+ 'include_dirs': [
+ '
+
+/*
+* If C++, prevent name mangling so that the compiler emits a binary file having undecorated names, thus mirroring the behavior of a C compiler.
+*/
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+* Compute the nth negaFibonacci number as a single-precision floating-point number.
+*/
+float stdlib_base_negafibonaccif( const int32_t n );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // !STDLIB_MATH_BASE_SPECIAL_NEGAFIBONACCIF_H
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/lib/index.js b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/lib/index.js
new file mode 100644
index 000000000000..f66af2ae9a4f
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/lib/index.js
@@ -0,0 +1,58 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+/**
+* Compute the nth negaFibonacci number as a single-precision floating-point number.
+*
+* @module @stdlib/math/base/special/negafibonaccif
+*
+* @example
+* var negafibonaccif = require( '@stdlib/math/base/special/negafibonaccif' );
+*
+* var y = negafibonaccif( 0 );
+* // returns 0
+*
+* y = negafibonaccif( -1 );
+* // returns 1
+*
+* y = negafibonaccif( -2 );
+* // returns -1
+*
+* y = negafibonaccif( -3 );
+* // returns 2
+*
+* y = negafibonaccif( -4 );
+* // returns -3
+*
+* y = negafibonaccif( -5 );
+* // returns 5
+*
+* y = negafibonaccif( -6 );
+* // returns -8
+*/
+
+// MODULES //
+
+var main = require( './main.js' );
+
+
+// EXPORTS //
+
+module.exports = main;
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/lib/main.js b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/lib/main.js
new file mode 100644
index 000000000000..467f285af1c2
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/lib/main.js
@@ -0,0 +1,93 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var isInteger = require( '@stdlib/math/base/assert/is-integerf' );
+var absf = require( '@stdlib/math/base/special/absf' );
+var MAX_FIBONACCI = require( '@stdlib/constants/float32/max-safe-nth-fibonacci' );
+var NEGAFIBONACCIF = require( './negafibonaccif.json' );
+
+
+// MAIN //
+
+/**
+* Compute the nth negaFibonacci number as a single-precision floating-point number.
+*
+* @param {NonPositiveInteger} n - the negaFibonacci number to compute
+* @returns {integer} negaFibonacci number
+*
+* @example
+* var y = negafibonaccif( 0 );
+* // returns 0
+*
+* @example
+* var y = negafibonaccif( -1 );
+* // returns 1
+*
+* @example
+* var y = negafibonaccif( -2 );
+* // returns -1
+*
+* @example
+* var y = negafibonaccif( -3 );
+* // returns 2
+*
+* @example
+* var y = negafibonaccif( -4 );
+* // returns -3
+*
+* @example
+* var y = negafibonaccif( -5 );
+* // returns 5
+*
+* @example
+* var y = negafibonaccif( -6 );
+* // returns -8
+*
+* @example
+* var y = negafibonaccif( NaN );
+* // returns NaN
+*
+* @example
+* var y = negafibonaccif( -3.14 );
+* // returns NaN
+*/
+function negafibonaccif( n ) {
+ var an;
+ if (
+ isnanf( n ) ||
+ isInteger( n ) === false ||
+ n > 0
+ ) {
+ return NaN;
+ }
+ an = absf( n );
+ if ( an > MAX_FIBONACCI ) {
+ return NaN;
+ }
+ return NEGAFIBONACCIF[ an ];
+}
+
+
+// EXPORTS //
+
+module.exports = negafibonaccif;
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/lib/native.js b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/lib/native.js
new file mode 100644
index 000000000000..40bdca9072cf
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/lib/native.js
@@ -0,0 +1,70 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var addon = require( './../src/addon.node' );
+
+
+// MAIN //
+
+/**
+* Compute the nth negaFibonacci number as a single-precision floating-point number.
+*
+* @private
+* @param {NonPositiveInteger} n - the negaFibonacci number to compute
+* @returns {integer} negaFibonacci number
+*
+* @example
+* var y = negafibonaccif( 0 );
+* // returns 0
+*
+* @example
+* var y = negafibonaccif( -1 );
+* // returns 1
+*
+* @example
+* var y = negafibonaccif( -2 );
+* // returns -1
+*
+* @example
+* var y = negafibonaccif( -3 );
+* // returns 2
+*
+* @example
+* var y = negafibonaccif( -4 );
+* // returns -3
+*
+* @example
+* var y = negafibonaccif( -5 );
+* // returns 5
+*
+* @example
+* var y = negafibonaccif( -6 );
+* // returns -8
+*/
+function negafibonaccif( n ) {
+ return addon( n );
+}
+
+
+// EXPORTS //
+
+module.exports = negafibonaccif;
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/lib/negafibonaccif.json b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/lib/negafibonaccif.json
new file mode 100644
index 000000000000..cf2f4d77afbc
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/lib/negafibonaccif.json
@@ -0,0 +1 @@
+[0,1,-1,2,-3,5,-8,13,-21,34,-55,89,-144,233,-377,610,-987,1597,-2584,4181,-6765,10946,-17711,28657,-46368,75025,-121393,196418,-317811,514229,-832040,1346269,-2178309,3524578,-5702887,9227465,-14930352]
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/manifest.json b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/manifest.json
new file mode 100644
index 000000000000..8a5106e3b52a
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/manifest.json
@@ -0,0 +1,75 @@
+{
+ "options": {
+ "task": "build"
+ },
+ "fields": [
+ {
+ "field": "src",
+ "resolve": true,
+ "relative": true
+ },
+ {
+ "field": "include",
+ "resolve": true,
+ "relative": true
+ },
+ {
+ "field": "libraries",
+ "resolve": false,
+ "relative": false
+ },
+ {
+ "field": "libpath",
+ "resolve": true,
+ "relative": false
+ }
+ ],
+ "confs": [
+ {
+ "task": "build",
+ "src": [
+ "./src/main.c"
+ ],
+ "include": [
+ "./include"
+ ],
+ "libraries": [],
+ "libpath": [],
+ "dependencies": [
+ "@stdlib/math/base/napi/unary",
+ "@stdlib/constants/float32/max-safe-nth-fibonacci",
+ "@stdlib/math/base/special/absf"
+ ]
+ },
+ {
+ "task": "benchmark",
+ "src": [
+ "./src/main.c"
+ ],
+ "include": [
+ "./include"
+ ],
+ "libraries": [],
+ "libpath": [],
+ "dependencies": [
+ "@stdlib/constants/float32/max-safe-nth-fibonacci",
+ "@stdlib/math/base/special/absf"
+ ]
+ },
+ {
+ "task": "examples",
+ "src": [
+ "./src/main.c"
+ ],
+ "include": [
+ "./include"
+ ],
+ "libraries": [],
+ "libpath": [],
+ "dependencies": [
+ "@stdlib/constants/float32/max-safe-nth-fibonacci",
+ "@stdlib/math/base/special/absf"
+ ]
+ }
+ ]
+}
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/package.json b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/package.json
new file mode 100644
index 000000000000..a079695c6e4d
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/package.json
@@ -0,0 +1,68 @@
+{
+ "name": "@stdlib/math/base/special/negafibonaccif",
+ "version": "0.0.0",
+ "description": "Compute the nth negaFibonacci number as a single-precision floating-point number.",
+ "license": "Apache-2.0",
+ "author": {
+ "name": "The Stdlib Authors",
+ "url": "https://github.com/stdlib-js/stdlib/graphs/contributors"
+ },
+ "contributors": [
+ {
+ "name": "The Stdlib Authors",
+ "url": "https://github.com/stdlib-js/stdlib/graphs/contributors"
+ }
+ ],
+ "main": "./lib",
+ "gypfile": true,
+ "directories": {
+ "benchmark": "./benchmark",
+ "doc": "./docs",
+ "example": "./examples",
+ "include": "./include",
+ "lib": "./lib",
+ "src": "./src",
+ "test": "./test"
+ },
+ "types": "./docs/types",
+ "scripts": {},
+ "homepage": "https://github.com/stdlib-js/stdlib",
+ "repository": {
+ "type": "git",
+ "url": "git://github.com/stdlib-js/stdlib.git"
+ },
+ "bugs": {
+ "url": "https://github.com/stdlib-js/stdlib/issues"
+ },
+ "dependencies": {},
+ "devDependencies": {},
+ "engines": {
+ "node": ">=0.10.0",
+ "npm": ">2.7.0"
+ },
+ "os": [
+ "aix",
+ "darwin",
+ "freebsd",
+ "linux",
+ "macos",
+ "openbsd",
+ "sunos",
+ "win32",
+ "windows"
+ ],
+ "keywords": [
+ "stdlib",
+ "stdmath",
+ "mathematics",
+ "math",
+ "special functions",
+ "special",
+ "function",
+ "fibonacci",
+ "negafibonacci",
+ "fib",
+ "nfib",
+ "number"
+ ]
+}
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/src/Makefile b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/src/Makefile
new file mode 100644
index 000000000000..7733b6180cb4
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/src/Makefile
@@ -0,0 +1,70 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2025 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+ QUIET := @
+else
+ QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+ OS := WINNT
+endif
+endif
+endif
+endif
+
+
+# RULES #
+
+#/
+# Removes generated files for building an add-on.
+#
+# @example
+# make clean-addon
+#/
+clean-addon:
+ $(QUIET) -rm -f *.o *.node
+
+.PHONY: clean-addon
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean: clean-addon
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/src/addon.c b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/src/addon.c
new file mode 100644
index 000000000000..3609bb251411
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/src/addon.c
@@ -0,0 +1,24 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/math/base/special/negafibonaccif.h"
+#include "stdlib/math/base/napi/unary.h"
+#include
+
+// cppcheck-suppress shadowFunction
+STDLIB_MATH_BASE_NAPI_MODULE_I_F( stdlib_base_negafibonaccif )
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/src/main.c b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/src/main.c
new file mode 100644
index 000000000000..6b2baa5767a5
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/src/main.c
@@ -0,0 +1,83 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/math/base/special/negafibonaccif.h"
+#include "stdlib/math/base/special/absf.h"
+#include "stdlib/constants/float32/max_safe_nth_fibonacci.h"
+
+static const float negafibonaccif_value[ 37 ] = {
+ 0.0f,
+ 1.0f,
+ -1.0f,
+ 2.0f,
+ -3.0f,
+ 5.0f,
+ -8.0f,
+ 13.0f,
+ -21.0f,
+ 34.0f,
+ -55.0f,
+ 89.0f,
+ -144.0f,
+ 233.0f,
+ -377.0f,
+ 610.0f,
+ -987.0f,
+ 1597.0f,
+ -2584.0f,
+ 4181.0f,
+ -6765.0f,
+ 10946.0f,
+ -17711.0f,
+ 28657.0f,
+ -46368.0f,
+ 75025.0f,
+ -121393.0f,
+ 196418.0f,
+ -317811.0f,
+ 514229.0f,
+ -832040.0f,
+ 1346269.0f,
+ -2178309.0f,
+ 3524578.0f,
+ -5702887.0f,
+ 9227465.0f,
+ -14930352.0f
+};
+
+/**
+* Compute the nth negaFibonacci number as a single-precision floating-point number.
+*
+* @param n input value
+* @return output value
+*
+* @example
+* float out = stdlib_base_negafibonaccif( -1 );
+* // returns 1.0f
+*/
+float stdlib_base_negafibonaccif( const int32_t n ) {
+ int32_t an;
+ if ( n > 0 ) {
+ return 0.0f / 0.0f; // NaN
+ }
+ an = stdlib_base_absf( n );
+ if ( an > STDLIB_CONSTANT_FLOAT32_MAX_SAFE_NTH_FIBONACCI ) {
+ return 0.0f / 0.0f; // NaN
+ }
+ return negafibonaccif_value[ an ];
+}
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/test/test.js b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/test/test.js
new file mode 100644
index 000000000000..064dd9789da0
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/test/test.js
@@ -0,0 +1,106 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var tape = require( 'tape' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var absf = require( '@stdlib/math/base/special/absf' );
+var NINF = require( '@stdlib/constants/float32/ninf' );
+var fibonacci = require( '@stdlib/math/base/special/fibonacci' );
+var negafibonaccif = require( './../lib' );
+
+
+// FIXTURES //
+
+var NEGAFIBONACCIF = require( './../lib/negafibonaccif.json' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof negafibonaccif, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'if provided a positive number, the function returns `NaN`', function test( t ) {
+ var v;
+ var i;
+
+ t.strictEqual( isnanf( negafibonaccif( 3.14 ) ), true, 'returns expected value' );
+
+ for ( i = 1; i < 100; i++ ) {
+ v = negafibonaccif( i );
+ t.strictEqual( isnanf( v ), true, 'returns expected value' );
+ }
+ t.end();
+});
+
+tape( 'if provided negative infinity, the function returns `NaN`', function test( t ) {
+ var v = negafibonaccif( NINF );
+ t.strictEqual( isnanf( v ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'if provided `NaN`, the function returns `NaN`', function test( t ) {
+ var v = negafibonaccif( NaN );
+ t.strictEqual( isnanf( v ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'if provided a non-integer, the function returns `NaN`', function test( t ) {
+ var v = negafibonaccif( -3.14 );
+ t.strictEqual( isnanf( v ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function returns the nth negaFibonacci number', function test( t ) {
+ var v;
+ var i;
+ for ( i = 0; i > -37; i-- ) {
+ v = negafibonaccif( i );
+ t.strictEqual( v, NEGAFIBONACCIF[ absf(i) ], 'returns expected value' );
+ }
+ t.end();
+});
+
+tape( 'the function returns the nth negaFibonacci number (Fibonacci relationship)', function test( t ) {
+ var v;
+ var f;
+ var i;
+ for ( i = 0; i > -37; i-- ) {
+ v = negafibonaccif( i );
+ f = pow( -1.0, absf(i)+1 ) * fibonacci( absf(i) );
+ t.strictEqual( v, f, 'returns expected value' );
+ }
+ t.end();
+});
+
+tape( 'if provided nonpositive integers less than `-36`, the function returns `NaN`', function test( t ) {
+ var i;
+ var v;
+ for ( i = -37; i > -200; i-- ) {
+ v = negafibonaccif( i );
+ t.strictEqual( isnanf( v ), true, 'returns expected value' );
+ }
+ t.end();
+});
diff --git a/lib/node_modules/@stdlib/math/base/special/negafibonaccif/test/test.native.js b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/test/test.native.js
new file mode 100644
index 000000000000..4c86e9ca1ff3
--- /dev/null
+++ b/lib/node_modules/@stdlib/math/base/special/negafibonaccif/test/test.native.js
@@ -0,0 +1,96 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var resolve = require( 'path' ).resolve;
+var tape = require( 'tape' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var absf = require( '@stdlib/math/base/special/absf' );
+var fibonacci = require( '@stdlib/math/base/special/fibonacci' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+
+
+// VARIABLES //
+
+var negafibonaccif = tryRequire( resolve( __dirname, './../lib/native.js' ) );
+var opts = {
+ 'skip': ( negafibonaccif instanceof Error )
+};
+
+
+// FIXTURES //
+
+var NEGAFIBONACCIF = require( './../lib/negafibonaccif.json' );
+
+
+// TESTS //
+
+tape( 'main export is a function', opts, function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof negafibonaccif, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'if provided a positive number, the function returns `NaN`', opts, function test( t ) {
+ var v;
+ var i;
+
+ t.strictEqual( isnanf( negafibonaccif( 3.14 ) ), true, 'returns NaN' );
+
+ for ( i = 1; i < 100; i++ ) {
+ v = negafibonaccif( i );
+ t.strictEqual( isnanf( v ), true, 'returns expected value' );
+ }
+ t.end();
+});
+
+tape( 'the function returns the nth negaFibonacci number', opts, function test( t ) {
+ var v;
+ var i;
+ for ( i = 0; i > -37; i-- ) {
+ v = negafibonaccif( i );
+ t.strictEqual( v, NEGAFIBONACCIF[ absf(i) ], 'returns expected value' );
+ }
+ t.end();
+});
+
+tape( 'the function returns the nth negaFibonacci number (Fibonacci relationship)', opts, function test( t ) {
+ var v;
+ var f;
+ var i;
+ for ( i = 0; i > -37; i-- ) {
+ v = negafibonaccif( i );
+ f = pow( -1.0, absf(i) + 1 ) * fibonacci( absf(i) );
+ t.strictEqual( v, f, 'returns expected value' );
+ }
+ t.end();
+});
+
+tape( 'if provided nonpositive integers less than `-36`, the function returns `NaN`', opts, function test( t ) {
+ var i;
+ var v;
+ for ( i = -79; i > -200; i-- ) {
+ v = negafibonaccif( i );
+ t.strictEqual( isnanf( v ), true, 'returns expected value' );
+ }
+ t.end();
+});