bench: update benchmarks and test descriptions

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

@@ -21,8 +21,8 @@
 // MODULES //
 
 var bench = require( '@stdlib/bench' );
-var randu = require( '@stdlib/random/base/randu' );
-var roundf = require( '@stdlib/math/base/special/roundf' );
+var randu = require( '@stdlib/random/array/uniform' );
+var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
 var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var pkg = require( './../package.json' ).name;
 var ldexpf = require( './../lib' );
@@ -36,11 +36,12 @@ bench( pkg, function benchmark( b ) {
 	var z;
 	var i;
 
+	x = randu( 100, -10.0, 10.0 );
+	y = discreteUniform( 100, -1020.0, 1020.0 );
+
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
-		x = ( randu() * 20.0 ) - 10.0;
-		y = roundf( randu() * 2040.0 ) - 1020.0;
-		z = ldexpf( x, y );
+		z = ldexpf( x[ i % x.length ], y[ i % y.length ] );
 		if ( isnanf( z ) ) {
 			b.fail( 'should not return NaN' );
 		}

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

@@ -23,7 +23,7 @@
 var resolve = require( 'path' ).resolve;
 var bench = require( '@stdlib/bench' );
 var randu = require( '@stdlib/random/base/randu' );
-var roundf = require( '@stdlib/math/base/special/roundf' );
+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;
@@ -45,11 +45,12 @@ bench( pkg+'::native', opts, function benchmark( b ) {
 	var z;
 	var i;
 
+	x = randu( 100, -10.0, 10.0 );
+	y = discreteUniform( 100, -1020.0, 1020.0 );
+
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
-		x = ( randu() * 20.0 ) - 10.0;
-		y = roundf( randu() * 2040.0 ) - 1020.0;
-		z = ldexpf( x, y );
+		z = ldexpf( x[ i % x.length ], y[ i % y.length ] );
 		if ( isnanf( z ) ) {
 			b.fail( 'should not return NaN' );
 		}

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

@@ -92,16 +92,19 @@ static float rand_float( void ) {
 static double benchmark( void ) {
 	double elapsed;
 	double t;
-	float x;
-	float y;
+	float x[ 100 ];
+	float y[ 100 ];
 	float z;
 	int i;
 
+	for ( i = 0; i < 100; i++ ) {
+		x[ i ] = ( 20.0f * rand_float() ) - 10.0f;
+		y[ i ] = ( 2048.0f * rand_float() ) - 1024.0f;
+	}
+
 	t = tic();
 	for ( i = 0; i < ITERATIONS; i++ ) {
-		x = ( rand_float() * 20.0f ) - 10.0f;
-		y = ( rand_float() * 2048.0f ) - 1024.0f;
-		z = stdlib_base_ldexpf( x, y );
+		z = stdlib_base_ldexpf( x[ i % 100 ], y[ i % 100 ] );
 		if ( z != z ) {
 			printf( "should not return NaN\n" );
 			break;

lib/node_modules/@stdlib/math/base/special/ldexpf/test/test.js

@@ -158,25 +158,25 @@ tape( 'the function multiplies a number by an integer power of two (subnormals)'
 
 tape( 'if provided a fraction equal to `+0`, the function returns `+0`', function test( t ) {
 	var v = ldexpf( 0.0, 10 );
-	t.equal( isPositiveZerof( v ), true, 'returns +0' );
+	t.equal( isPositiveZerof( v ), true, 'returns expected value' );
 	t.end();
 });
 
 tape( 'if provided a fraction equal to `-0`, the function returns `-0`', function test( t ) {
 	var v = ldexpf( -0.0, 10 );
-	t.equal( isNegativeZerof( v ), true, 'returns -0' );
+	t.equal( isNegativeZerof( v ), true, 'returns expected value' );
 	t.end();
 });
 
 tape( 'if provided a fraction equal to `+infinity`, the function returns `+infinity`', function test( t ) {
 	var v = ldexpf( PINF, 10 );
-	t.equal( v, PINF, 'returns +infinity' );
+	t.equal( v, PINF, 'returns expected value' );
 	t.end();
 });
 
 tape( 'if provided a fraction equal to `-infinity`, the function returns `-infinity`', function test( t ) {
 	var v = ldexpf( NINF, 10 );
-	t.equal( v, NINF, 'returns -infinity' );
+	t.equal( v, NINF, 'returns expected value' );
 	t.end();
 });
 
@@ -195,33 +195,33 @@ tape( 'if provided a fraction equal to `NaN`, the function returns `NaN`', funct
 tape( 'the function returns `0` if the result of multiplying a positive fraction and an integer power of two underflows', function test( t ) {
 	// Min subnormal ~1.4e-45 ~ 2**-149
 	var v = ldexpf( 0.005, -148 );
-	t.equal( isPositiveZerof( v ), true, 'returns +0' );
+	t.equal( isPositiveZerof( v ), true, 'returns expected value' );
 	t.end();
 });
 
 tape( 'the function returns `-0` if the result of multiplying a negative fraction and an integer power of two underflows', function test( t ) {
 	// Min subnormal ~1.4e-45 ~ 2**-149
 	var v = ldexpf( -0.005, -148 );
-	t.equal( isNegativeZerof( v ), true, 'returns -0' );
+	t.equal( isNegativeZerof( v ), true, 'returns expected value' );
 	t.end();
 });
 
 tape( 'the function returns `+infinity` if the result of multiplying a positive fraction and an integer power of two overflows', function test( t ) {
 	// Max double ~1e38 ~ 2**126
 	var v = ldexpf( 1.0e3, 124 );
-	t.equal( v, PINF, 'returns +infinity' );
+	t.equal( v, PINF, 'returns expected value' );
 	t.end();
 });
 
 tape( 'the function returns `-infinity` if the result of multiplying a negative fraction and an integer power of two overflows', function test( t ) {
 	// Max double ~1e38 ~ 2**126
 	var v = ldexpf( -1.0e3, 124 );
-	t.equal( v, NINF, 'returns -infinity' );
+	t.equal( v, NINF, 'returns expected value' );
 	t.end();
 });
 
 tape('if provided a fraction and a very large negative exponent, the function returns zero due to underflow', function test(t) {
 	var v = ldexpf( 1.401298464324817e-45, -60000 );
-	t.equal(v, 0.0, 'returns zero due to underflow');
+	t.equal(v, 0.0, 'returns expected value');
 	t.end();
 });

lib/node_modules/@stdlib/math/base/special/ldexpf/test/test.native.js

@@ -167,25 +167,25 @@ tape( 'the function multiplies a number by an integer power of two (subnormals)'
 
 tape( 'if provided a fraction equal to `+0`, the function returns `+0`', opts, function test( t ) {
 	var v = ldexpf( 0.0, 10 );
-	t.equal( isPositiveZerof( v ), true, 'returns +0' );
+	t.equal( isPositiveZerof( v ), true, 'returns expected value' );
 	t.end();
 });
 
 tape( 'if provided a fraction equal to `-0`, the function returns `-0`', opts, function test( t ) {
 	var v = ldexpf( -0.0, 10 );
-	t.equal( isNegativeZerof( v ), true, 'returns -0' );
+	t.equal( isNegativeZerof( v ), true, 'returns expected value' );
 	t.end();
 });
 
 tape( 'if provided a fraction equal to `+infinity`, the function returns `+infinity`', opts, function test( t ) {
 	var v = ldexpf( PINF, 10 );
-	t.equal( v, PINF, 'returns +infinity' );
+	t.equal( v, PINF, 'returns expected value' );
 	t.end();
 });
 
 tape( 'if provided a fraction equal to `-infinity`, the function returns `-infinity`', opts, function test( t ) {
 	var v = ldexpf( NINF, 10 );
-	t.equal( v, NINF, 'returns -infinity' );
+	t.equal( v, NINF, 'returns expected value' );
 	t.end();
 });
 
@@ -204,33 +204,33 @@ tape( 'if provided a fraction equal to `NaN`, the function returns `NaN`', opts,
 tape( 'the function returns `0` if the result of multiplying a positive fraction and an integer power of two underflows', opts, function test( t ) {
 	// Min subnormal ~1.4e-45 ~ 2**-149
 	var v = ldexpf( 0.005, -148 );
-	t.equal( isPositiveZerof( v ), true, 'returns +0' );
+	t.equal( isPositiveZerof( v ), true, 'returns expected value' );
 	t.end();
 });
 
 tape( 'the function returns `-0` if the result of multiplying a negative fraction and an integer power of two underflows', opts, function test( t ) {
 	// Min subnormal ~1.4e-45 ~ 2**-149
 	var v = ldexpf( -0.005, -148 );
-	t.equal( isNegativeZerof( v ), true, 'returns -0' );
+	t.equal( isNegativeZerof( v ), true, 'returns expected value' );
 	t.end();
 });
 
 tape( 'the function returns `+infinity` if the result of multiplying a positive fraction and an integer power of two overflows', opts, function test( t ) {
 	// Max double ~1e38 ~ 2**126
 	var v = ldexpf( 1.0e3, 124 );
-	t.equal( v, PINF, 'returns +infinity' );
+	t.equal( v, PINF, 'returns expected value' );
 	t.end();
 });
 
 tape( 'the function returns `-infinity` if the result of multiplying a negative fraction and an integer power of two overflows', opts, function test( t ) {
 	// Max double ~1e38 ~ 2**126
 	var v = ldexpf( -1.0e3, 124 );
-	t.equal( v, NINF, 'returns -infinity' );
+	t.equal( v, NINF, 'returns expected value' );
 	t.end();
 });
 
 tape('if provided a fraction and a very large negative exponent, the function returns zero due to underflow', opts, function test(t) {
 	var v = ldexpf( 1.401298464324817e-45, -60000 );
-	t.equal(v, 0.0, 'returns zero due to underflow');
+	t.equal(v, 0.0, 'returns expected value');
 	t.end();
 });