bench: refactor benchmarks in math/base/special/rsqrtf

lib/node_modules/@stdlib/math/base/special/rsqrtf/benchmark/benchmark.js

@@ -1,7 +1,7 @@
 /**
 * @license Apache-2.0
 *
-* Copyright (c) 2020 The Stdlib Authors.
+* 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.
@@ -21,7 +21,7 @@
 // MODULES //
 
 var bench = require( '@stdlib/bench' );
-var randu = require( '@stdlib/random/base/randu' );
+var randu = require( '@stdlib/random/array/uniform' );
 var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var pkg = require( './../package.json' ).name;
 var rsqrtf = require( './../lib' );
@@ -34,10 +34,13 @@ bench( pkg, function benchmark( b ) {
 	var y;
 	var i;
 
+	x = randu( 100, 0.0, 100000.0, {
+		'dtype': 'float32'
+	});
+
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
-		x = ( randu()*100000.0 ) - 0.0;
-		y = rsqrtf( x );
+		y = rsqrtf( x[ i % x.length ] );
 		if ( isnanf( y ) ) {
 			b.fail( 'should not return NaN' );
 		}
@@ -55,10 +58,13 @@ bench( pkg+'::built-in', function benchmark( b ) {
 	var y;
 	var i;
 
+	x = randu( 100, 0.0, 100000.0, {
+		'dtype': 'float32'
+	});
+
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
-		x = ( randu()*100000.0 ) - 0.0;
-		y = 1.0 / Math.sqrt( x ); // eslint-disable-line stdlib/no-builtin-math
+		y = 1.0 / Math.sqrt( x[ i % x.length ] ); // eslint-disable-line stdlib/no-builtin-math
 		if ( isnanf( y ) ) {
 			b.fail( 'should not return NaN' );
 		}

lib/node_modules/@stdlib/math/base/special/rsqrtf/benchmark/benchmark.native.js

@@ -1,7 +1,7 @@
 /**
 * @license Apache-2.0
 *
-* Copyright (c) 2020 The Stdlib Authors.
+* 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.
@@ -22,7 +22,7 @@
 
 var resolve = require( 'path' ).resolve;
 var bench = require( '@stdlib/bench' );
-var randu = require( '@stdlib/random/base/randu' );
+var randu = require( '@stdlib/random/array/uniform' );
 var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var tryRequire = require( '@stdlib/utils/try-require' );
 var pkg = require( './../package.json' ).name;
@@ -43,10 +43,13 @@ bench( pkg+'::native', opts, function benchmark( b ) {
 	var y;
 	var i;
 
+	x = randu( 100, 0.0, 100000.0, {
+		'dtype': 'float32'
+	});
+
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
-		x = ( randu()*100000.0 ) - 0.0;
-		y = rsqrtf( x );
+		y = rsqrtf( x[ i % x.length ] );
 		if ( isnanf( y ) ) {
 			b.fail( 'should not return NaN' );
 		}

lib/node_modules/@stdlib/math/base/special/rsqrtf/benchmark/c/Makefile

@@ -1,7 +1,7 @@
 #/
 # @license Apache-2.0
 #
-# Copyright (c) 2020 The Stdlib Authors.
+# 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.
@@ -16,7 +16,6 @@
 # limitations under the License.
 #/
 
-
 # VARIABLES #
 
 ifndef VERBOSE

lib/node_modules/@stdlib/math/base/special/rsqrtf/benchmark/c/benchmark.c

@@ -1,7 +1,7 @@
 /**
 * @license Apache-2.0
 *
-* Copyright (c) 2020 The Stdlib Authors.
+* 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.
@@ -90,15 +90,18 @@ static float rand_float( void ) {
 */
 static double benchmark( void ) {
 	double elapsed;
-	float x;
-	float y;
+	float x[ 100 ];
 	double t;
+	float y;
 	int i;
 
+	for ( i = 0; i < 100; i++ ) {
+		x[ i ] = 100000.0f * rand_float();
+	}
+
 	t = tic();
 	for ( i = 0; i < ITERATIONS; i++ ) {
-		x = rand_float() * 100000.0f;
-		y = 1.0f / sqrtf( x );
+		y = 1.0f / sqrtf( x[ i % 100 ] );
 		if ( y != y ) {
 			printf( "should not return NaN\n" );
 			break;

lib/node_modules/@stdlib/math/base/special/rsqrtf/benchmark/c/native/Makefile

@@ -1,7 +1,7 @@
 #/
 # @license Apache-2.0
 #
-# Copyright (c) 2020 The Stdlib Authors.
+# 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.
@@ -88,15 +88,15 @@ c_targets := benchmark.out
 # RULES #
 
 #/
-# Compiles source files.
+# Compiles C 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} SOURCE_FILES - list of C source files
+# @param {string} [INCLUDE] - list of includes (e.g., `-I /foo/bar -I /beep/boop`)
+# @param {string} [LIBRARIES] - list of libraries (e.g., `-lpthread -lblas`)
 # @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`)
+# @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
@@ -112,13 +112,13 @@ all: $(c_targets)
 # 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`)
+# @param {string} SOURCE_FILES - list of C source files
+# @param {(string|void)} INCLUDE - list of includes (e.g., `-I /foo/bar -I /beep/boop`)
+# @param {(string|void)} LIBRARIES - list of libraries (e.g., `-lpthread -lblas`)
+# @param {(string|void)} LIBPATH - list of library paths (e.g., `-L /foo/bar -L /beep/boop`)
+# @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) $(INCLUDE) -o $@ $(SOURCE_FILES) $< $(LIBPATH) -lm $(LIBRARIES)

lib/node_modules/@stdlib/math/base/special/rsqrtf/benchmark/c/native/benchmark.c

@@ -1,7 +1,7 @@
 /**
 * @license Apache-2.0
 *
-* Copyright (c) 2020 The Stdlib Authors.
+* 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.
@@ -91,15 +91,18 @@ static float rand_float( void ) {
 */
 static double benchmark( void ) {
 	double elapsed;
-	float x;
-	float y;
+	float x[ 100 ];
 	double t;
+	float y;
 	int i;
 
+	for ( i = 0; i < 100; i++ ) {
+		x[ i ] = 100000.0f * rand_float();
+	}
+
 	t = tic();
 	for ( i = 0; i < ITERATIONS; i++ ) {
-		x = rand_float() * 100000.0f;
-		y = stdlib_base_rsqrtf( x );
+		y = stdlib_base_rsqrtf( x[ i % 100 ] );
 		if ( y != y ) {
 			printf( "should not return NaN\n" );
 			break;