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Scaffold number/float32/base/signbit package files
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lib/node_modules/@stdlib/number/float32/base/signbit/benchmark/benchmark.native.js
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/** | ||
* @license Apache-2.0 | ||
* | ||
* Copyright (c) 2022 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. | ||
*/ | ||
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'use strict'; | ||
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// MODULES // | ||
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var resolve = require( 'path' ).resolve; | ||
var bench = require( '@stdlib/bench' ); | ||
var randu = require( '@stdlib/random/base/randu' ); | ||
var isBoolean = require( '@stdlib/assert/is-boolean' ).isPrimitive; | ||
var toFloat32 = require( '@stdlib/number/float64/base/to-float32' ); | ||
var tryRequire = require( '@stdlib/utils/try-require' ); | ||
var pkg = require( './../package.json' ).name; | ||
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// VARIABLES // | ||
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var signbitf = tryRequire( resolve( __dirname, './../lib/native.js' ) ); | ||
var opts = { | ||
'skip': ( signbitf instanceof Error ) | ||
}; | ||
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// MAIN // | ||
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bench( pkg+'::native', opts, function benchmark( b ) { | ||
var x; | ||
var y; | ||
var i; | ||
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b.tic(); | ||
for ( i = 0; i < b.iterations; i++ ) { | ||
x = ( randu()*1.0e7 ) - 5.0e6; | ||
y = signbitf( toFloat32( x ) ); | ||
if ( typeof bool !== 'boolean' ) { | ||
b.fail( 'should return a boolean' ); | ||
} | ||
} | ||
b.toc(); | ||
if ( !isBoolean( y ) ) { | ||
b.fail( 'should return a boolean' ); | ||
} | ||
b.pass( 'benchmark finished' ); | ||
b.end(); | ||
}); |
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lib/node_modules/@stdlib/number/float32/base/signbit/test/test.native.js
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/** | ||
* @license Apache-2.0 | ||
* | ||
* Copyright (c) 2022 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. | ||
*/ | ||
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'use strict'; | ||
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// MODULES // | ||
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var resolve = require( 'path' ).resolve; | ||
var tape = require( 'tape' ); | ||
var randu = require( '@stdlib/random/base/randu' ); | ||
var round = require( '@stdlib/math/base/special/round' ); | ||
var pow = require( '@stdlib/math/base/special/pow' ); | ||
var toFloat32 = require( '@stdlib/number/float64/base/to-float32' ); | ||
var tryRequire = require( '@stdlib/utils/try-require' ); | ||
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// VARIABLES // | ||
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var signbitf = tryRequire( resolve( __dirname, './../lib/native.js' ) ); | ||
var opts = { | ||
'skip': ( signbitf instanceof Error ) | ||
}; | ||
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// TESTS // | ||
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tape( 'main export is a function', opts, function test( t ) { | ||
t.ok( true, __filename ); | ||
t.equal( typeof signbitf, 'function', 'main export is a function' ); | ||
t.end(); | ||
}); | ||
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tape( 'the function returns a boolean', opts, function test( t ) { | ||
t.equal( typeof signbitf(5.0), 'boolean', 'returns a boolean' ); | ||
t.end(); | ||
}); | ||
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tape( 'the function returns a boolean indicating if a sign bit is on (true) or off (false)', opts, function test( t ) { | ||
var bool; | ||
var sign; | ||
var frac; | ||
var exp; | ||
var x; | ||
var i; | ||
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for ( i = 0; i < 5000; i++ ) { | ||
if ( randu() < 0.5 ) { | ||
sign = -1.0; | ||
} else { | ||
sign = 1.0; | ||
} | ||
frac = randu() * 10.0; | ||
exp = round( randu()*44.0 ) - 22; | ||
x = sign * frac * pow( 10.0, exp ); | ||
x = toFloat32( x ); | ||
bool = signbitf( x ); | ||
if ( sign < 0.0 ) { | ||
t.equal( bool, true, 'returns true for ' + x ); | ||
} else { | ||
t.equal( bool, false, 'returns false for ' + x ); | ||
} | ||
} | ||
t.end(); | ||
}); |