diff --git a/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/README.md b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/README.md new file mode 100644 index 000000000000..e528c48a8240 --- /dev/null +++ b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/README.md @@ -0,0 +1,136 @@ + + +# isAlmostSameValue + +> Test if two half-precision floating-point numbers are approximately the same value within a specified number of ULPs (units in the last place). + +
+ +## Usage + +```javascript +var isAlmostSameValue = require( '@stdlib/number/float16/base/assert/is-almost-same-value' ); +``` + +#### isAlmostSameValue( a, b, maxULP ) + +Tests if two half-precision floating-point numbers are approximately the same value within a specified number of ULPs (units in the last place). + +```javascript +var EPS = require( '@stdlib/constants/float16/eps' ); + +var bool = isAlmostSameValue( 1.0, 1.0+EPS, 1 ); +// returns true + +bool = isAlmostSameValue( 1.0, 1.0+EPS, 0 ); +// returns false +``` + +In contrast to the strict equality operator `===`, the function distinguishes between `+0` and `-0` and treats `NaNs` as the same value. + +```javascript +var bool = isAlmostSameValue( NaN, 1.0, 1 ); +// returns false + +bool = isAlmostSameValue( 1.0, NaN, 1 ); +// returns false + +bool = isAlmostSameValue( NaN, NaN, 1 ); +// returns true + +bool = isAlmostSameValue( 0.0, -0.0, 0 ); +// returns false +``` + +
+ + + +
+ +## Notes + +- The function implements the [SameValue Algorithm][ecma-262-same-value-algorithm] as specified in ECMAScript 5. + +
+ + + +
+ +## Examples + + + +```javascript +var EPS = require( '@stdlib/constants/float16/eps' ); +var isAlmostSameValue = require( '@stdlib/number/float16/base/assert/is-almost-same-value' ); + +var bool = isAlmostSameValue( 1.0, 1.0+EPS, 1 ); +console.log( bool ); +// => true + +bool = isAlmostSameValue( 1.0+EPS, 1.0, 1 ); +console.log( bool ); +// => true + +bool = isAlmostSameValue( 1.0, 1.0+EPS+EPS, 1 ); +console.log( bool ); +// => false + +bool = isAlmostSameValue( 1.0, 1.0+EPS, 0 ); +console.log( bool ); +// => false + +bool = isAlmostSameValue( -0.0, 0.0, 0 ); +console.log( bool ); +// => false + +bool = isAlmostSameValue( 1.0, NaN, 1 ); +console.log( bool ); +// => false + +bool = isAlmostSameValue( NaN, NaN, 1 ); +console.log( bool ); +// => true +``` + +
+ + + + + +
+ +
+ + + + + +
+ +[ecma-262-same-value-algorithm]: http://ecma-international.org/ecma-262/5.1/#sec-9.12 + +
+ + diff --git a/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/benchmark/benchmark.js b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/benchmark/benchmark.js new file mode 100644 index 000000000000..d95eb78cd068 --- /dev/null +++ b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/benchmark/benchmark.js @@ -0,0 +1,60 @@ +/** +* @license Apache-2.0 +* +* Copyright (c) 2026 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 isBoolean = require( '@stdlib/assert/is-boolean' ).isPrimitive; +var pkg = require( './../package.json' ).name; +var isAlmostSameValue = require( './../lib' ); + + +// MAIN // + +bench( pkg, function benchmark( b ) { + var values; + var bool; + var v; + var i; + + values = [ + 5.0, + 3.14, + NaN, + -0.0, + 0.0, + -1.0 + ]; + + b.tic(); + for ( i = 0; i < b.iterations; i++ ) { + v = values[ i%values.length ]; + bool = isAlmostSameValue( v, v, 1 ); + if ( typeof bool !== 'boolean' ) { + b.fail( 'should return a boolean' ); + } + } + b.toc(); + if ( !isBoolean( bool ) ) { + b.fail( 'should return a boolean' ); + } + b.pass( 'benchmark finished' ); + b.end(); +}); diff --git a/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/docs/repl.txt b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/docs/repl.txt new file mode 100644 index 000000000000..5d9b4d6389dd --- /dev/null +++ b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/docs/repl.txt @@ -0,0 +1,42 @@ +{{alias}}( a, b, maxULP ) + Tests if two half-precision floating-point numbers are approximately the + same value within a specified number of ULPs (units in the last place). + + The function differs from the `===` operator in that the function treats + `-0` and `+0` as distinct and `NaNs` as the same. + + Parameters + ---------- + a: number + First input value. + + b: number + Second input value. + + maxULP: number + Maximum allowed ULP difference. + + Returns + ------- + bool: boolean + Boolean indicating whether two half-precision floating-point numbers + are approximately the same value within a specified number of ULPs. + + Examples + -------- + > var bool = {{alias}}( 1, 1+{{alias:@stdlib/constants/float16/eps}}, 1 ) + true + > bool = {{alias}}( 1+{{alias:@stdlib/constants/float16/eps}}, 1, 1 ) + true + > bool = {{alias}}( 1, 1+{{alias:@stdlib/constants/float16/eps}}*2, 1 ) + false + > bool = {{alias}}( 0.0, -0.0, 0 ) + false + > bool = {{alias}}( NaN, 1.0, 1 ) + false + > bool = {{alias}}( NaN, NaN, 0 ) + true + + See Also + -------- + diff --git a/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/docs/types/index.d.ts b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/docs/types/index.d.ts new file mode 100644 index 000000000000..dc8efb0ace21 --- /dev/null +++ b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/docs/types/index.d.ts @@ -0,0 +1,62 @@ +/* +* @license Apache-2.0 +* +* Copyright (c) 2026 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 + +/** +* Tests if two half-precision floating-point numbers are approximately the same value within a specified number of ULPs (units in the last place). +* +* ## Notes +* +* - The function differs from the `===` operator in that the function treats `-0` and `+0` as distinct and `NaNs` as the same. +* +* @param a - first input value +* @param b - second input value +* @param maxULP - maximum allowed ULP difference +* @returns boolean indicating whether two half-precision floating-point numbers are approximately the same value within a specified number of ULPs +* +* @example +* var EPS = require( '@stdlib/constants/float16/eps' ); +* +* var bool = isAlmostSameValue( 1.0, 1.0+EPS, 1 ); +* // returns true +* +* bool = isAlmostSameValue( 1.0+EPS, 1.0, 1 ); +* // returns true +* +* bool = isAlmostSameValue( 1.0, 1.0+EPS+EPS, 1 ); +* // returns false +* +* bool = isAlmostSameValue( 1.0, 1.0+EPS, 0 ); +* // returns false +* +* bool = isAlmostSameValue( 0.0, -0.0, 0 ); +* // returns false +* +* bool = isAlmostSameValue( 1.0, NaN, 1 ); +* // returns false +* +* bool = isAlmostSameValue( NaN, NaN, 1 ); +* // returns true +*/ +declare function isAlmostSameValue( a: number, b: number, maxULP: number ): boolean; + + +// EXPORTS // + +export = isAlmostSameValue; diff --git a/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/docs/types/test.ts b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/docs/types/test.ts new file mode 100644 index 000000000000..db8a6fdbc59c --- /dev/null +++ b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/docs/types/test.ts @@ -0,0 +1,71 @@ +/* +* @license Apache-2.0 +* +* Copyright (c) 2026 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 isAlmostSameValue = require( './index' ); + + +// TESTS // + +// The function returns a boolean... +{ + isAlmostSameValue( 3.14, 3.14, 1 ); // $ExpectType boolean +} + +// The compiler throws an error if the function is not provided a first argument which is a number... +{ + isAlmostSameValue( '5', 3.14, 1 ); // $ExpectError + isAlmostSameValue( true, 3.14, 1 ); // $ExpectError + isAlmostSameValue( false, 3.14, 1 ); // $ExpectError + isAlmostSameValue( null, 3.14, 1 ); // $ExpectError + isAlmostSameValue( void 0, 3.14, 1 ); // $ExpectError + isAlmostSameValue( [], 3.14, 1 ); // $ExpectError + isAlmostSameValue( {}, 3.14, 1 ); // $ExpectError + isAlmostSameValue( ( x: number ): number => x, 3.14, 1 ); // $ExpectError +} + +// The compiler throws an error if the function is not provided a second argument which is a number... +{ + isAlmostSameValue( 3.14, '5', 1 ); // $ExpectError + isAlmostSameValue( 3.14, true, 1 ); // $ExpectError + isAlmostSameValue( 3.14, false, 1 ); // $ExpectError + isAlmostSameValue( 3.14, null, 1 ); // $ExpectError + isAlmostSameValue( 3.14, void 0, 1 ); // $ExpectError + isAlmostSameValue( 3.14, [], 1 ); // $ExpectError + isAlmostSameValue( 3.14, {}, 1 ); // $ExpectError + isAlmostSameValue( 3.14, ( x: number ): number => x, 1 ); // $ExpectError +} + +// The compiler throws an error if the function is not provided a third argument which is a number... +{ + isAlmostSameValue( 3.14, 3.14, '5' ); // $ExpectError + isAlmostSameValue( 3.14, 3.14, true ); // $ExpectError + isAlmostSameValue( 3.14, 3.14, false ); // $ExpectError + isAlmostSameValue( 3.14, 3.14, null ); // $ExpectError + isAlmostSameValue( 3.14, 3.14, void 0 ); // $ExpectError + isAlmostSameValue( 3.14, 3.14, [] ); // $ExpectError + isAlmostSameValue( 3.14, 3.14, {} ); // $ExpectError + isAlmostSameValue( 3.14, 3.14, ( x: number ): number => x ); // $ExpectError +} + +// The compiler throws an error if the function is provided an unsupported number of arguments... +{ + isAlmostSameValue(); // $ExpectError + isAlmostSameValue( 3.14 ); // $ExpectError + isAlmostSameValue( 3.14, 3.14 ); // $ExpectError + isAlmostSameValue( 3.14, 3.14, 1, 2 ); // $ExpectError +} diff --git a/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/examples/index.js b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/examples/index.js new file mode 100644 index 000000000000..fdfa1773ee21 --- /dev/null +++ b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/examples/index.js @@ -0,0 +1,50 @@ +/** +* @license Apache-2.0 +* +* Copyright (c) 2026 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 EPS = require( '@stdlib/constants/float16/eps' ); +var isAlmostSameValue = require( './../lib' ); + +var bool = isAlmostSameValue( 1.0, 1.0+EPS, 1 ); +console.log( bool ); +// => true + +bool = isAlmostSameValue( 1.0+EPS, 1.0, 1 ); +console.log( bool ); +// => true + +bool = isAlmostSameValue( 1.0, 1.0+EPS+EPS, 1 ); +console.log( bool ); +// => false + +bool = isAlmostSameValue( 1.0, 1.0+EPS, 0 ); +console.log( bool ); +// => false + +bool = isAlmostSameValue( -0.0, 0.0, 0 ); +console.log( bool ); +// => false + +bool = isAlmostSameValue( 1.0, NaN, 1 ); +console.log( bool ); +// => false + +bool = isAlmostSameValue( NaN, NaN, 1 ); +console.log( bool ); +// => true diff --git a/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/lib/index.js b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/lib/index.js new file mode 100644 index 000000000000..1cf7df840859 --- /dev/null +++ b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/lib/index.js @@ -0,0 +1,59 @@ +/** +* @license Apache-2.0 +* +* Copyright (c) 2026 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'; + +/** +* Test if two half-precision floating-point numbers are approximately the same value within a specified number of ULPs (units in the last place). +* +* @module @stdlib/number/float16/base/assert/is-almost-same-value +* +* @example +* var EPS = require( '@stdlib/constants/float16/eps' ); +* var isAlmostSameValue = require( '@stdlib/number/float16/base/assert/is-almost-same-value' ); +* +* var bool = isAlmostSameValue( 1.0, 1.0+EPS, 1 ); +* // returns true +* +* bool = isAlmostSameValue( 1.0+EPS, 1.0, 1 ); +* // returns true +* +* bool = isAlmostSameValue( 1.0, 1.0+EPS+EPS, 1 ); +* // returns false +* +* bool = isAlmostSameValue( 1.0, 1.0+EPS, 0 ); +* // returns false +* +* bool = isAlmostSameValue( 0.0, -0.0, 0 ); +* // returns false +* +* bool = isAlmostSameValue( 1.0, NaN, 1 ); +* // returns false +* +* bool = isAlmostSameValue( NaN, NaN, 1 ); +* // returns true +*/ + +// MODULES // + +var main = require( './main.js' ); + + +// EXPORTS // + +module.exports = main; diff --git a/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/lib/main.js b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/lib/main.js new file mode 100644 index 000000000000..e8e7e1ce8efa --- /dev/null +++ b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/lib/main.js @@ -0,0 +1,95 @@ +/** +* @license Apache-2.0 +* +* Copyright (c) 2026 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 isnan = require( '@stdlib/math/base/assert/is-nan' ); +var f16 = require( '@stdlib/number/float64/base/to-float16' ); +var ulpdiff = require( '@stdlib/number/float16/base/ulp-difference' ); + + +// MAIN // + +/** +* Tests if two half-precision floating-point numbers are approximately the same value within a specified number of ULPs (units in the last place). +* +* ## Notes +* +* - The function implements the [SameValue Algorithm][ecma-262-same-value-algorithm], as specified in ECMAScript 5. +* - In contrast to the strict equality operator `===`, `-0` and `+0` are distinguishable and `NaNs` are the same. +* +* [ecma-262-same-value-algorithm]: http://ecma-international.org/ecma-262/5.1/#sec-9.12 +* +* @param {number} a - first input value +* @param {number} b - second input value +* @param {number} maxULP - maximum allowed ULP difference +* @returns {boolean} boolean indicating whether two half-precision floating-point numbers are approximately the same value within a specified number of ULPs +* +* @example +* var EPS = require( '@stdlib/constants/float16/eps' ); +* +* var bool = isAlmostSameValue( 1.0, 1.0+EPS, 1 ); +* // returns true +* +* bool = isAlmostSameValue( 1.0+EPS, 1.0, 1 ); +* // returns true +* +* bool = isAlmostSameValue( 1.0, 1.0+EPS+EPS, 1 ); +* // returns false +* +* bool = isAlmostSameValue( 1.0, 1.0+EPS, 0 ); +* // returns false +* +* bool = isAlmostSameValue( 0.0, -0.0, 0 ); +* // returns false +* +* bool = isAlmostSameValue( 1.0, NaN, 1 ); +* // returns false +* +* bool = isAlmostSameValue( NaN, NaN, 1 ); +* // returns true +*/ +function isAlmostSameValue( a, b, maxULP ) { + var af; + var bf; + + af = f16( a ); + bf = f16( b ); + + // Check for NaN (NaN is considered equal to NaN in SameValue): + if ( isnan( af ) && isnan( bf ) ) { + return true; + } + // Only distinguish signed zeros when maxULP is 0: + if ( maxULP === 0 && af === 0.0 && bf === 0.0 ) { + return ( 1.0 / af === 1.0 / bf ); + } + // Check if exactly equal: + if ( af === bf ) { + return true; + } + // Check ULP difference: + return ulpdiff( af, bf ) <= maxULP; +} + + +// EXPORTS // + +module.exports = isAlmostSameValue; diff --git a/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/package.json b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/package.json new file mode 100644 index 000000000000..79615123c663 --- /dev/null +++ b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/package.json @@ -0,0 +1,75 @@ +{ + "name": "@stdlib/number/float16/base/assert/is-almost-same-value", + "version": "0.0.0", + "description": "Test if two half-precision floating-point numbers are approximately the same value within a specified number of ULPs (units in the last place).", + "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", + "directories": { + "benchmark": "./benchmark", + "doc": "./docs", + "example": "./examples", + "lib": "./lib", + "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", + "stdassert", + "assertion", + "assert", + "utilities", + "utility", + "utils", + "util", + "equal", + "same", + "strict", + "is", + "issame", + "isequal", + "isalmostsamevalue", + "type", + "check", + "valid", + "validate", + "test", + "float", + "half-precision" + ] +} diff --git a/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/test/test.js b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/test/test.js new file mode 100644 index 000000000000..1a559133e60d --- /dev/null +++ b/lib/node_modules/@stdlib/number/float16/base/assert/is-almost-same-value/test/test.js @@ -0,0 +1,89 @@ +/** +* @license Apache-2.0 +* +* Copyright (c) 2026 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 EPS = require( '@stdlib/constants/float16/eps' ); +var isAlmostSameValue = require( './../lib' ); + + +// TESTS // + +tape( 'main export is a function', function test( t ) { + t.ok( true, __filename ); + t.strictEqual( typeof isAlmostSameValue, 'function', 'main export is a function' ); + t.end(); +}); + +tape( 'the function returns `true` if provided `NaN` as both input values irrespective of the specified number of ULPs', function test( t ) { + t.strictEqual( isAlmostSameValue( NaN, NaN, 0 ), true, 'returns expected value' ); + t.strictEqual( isAlmostSameValue( NaN, NaN, 1 ), true, 'returns expected value' ); + t.strictEqual( isAlmostSameValue( NaN, NaN, 10 ), true, 'returns expected value' ); + t.end(); +}); + +tape( 'the function returns `false` if only one input value is `NaN`', function test( t ) { + t.strictEqual( isAlmostSameValue( NaN, 3.14, 0 ), false, 'returns expected value' ); + t.strictEqual( isAlmostSameValue( 3.14, NaN, 0 ), false, 'returns expected value' ); + t.strictEqual( isAlmostSameValue( NaN, 3.14, 1 ), false, 'returns expected value' ); + t.strictEqual( isAlmostSameValue( 3.14, NaN, 1 ), false, 'returns expected value' ); + t.end(); +}); + +tape( 'the function returns `true` if provided two half-precision floating-point numbers which are the same value irrespective of the specified number of ULPs', function test( t ) { + var values; + var i; + + values = [ + 5.0, + 3.14, + -3.14, + 0.0, + -0.0 + ]; + for ( i = 0; i < values.length; i++ ) { + t.strictEqual( isAlmostSameValue( values[ i ], values[ i ], 0 ), true, 'returns expected value' ); + t.strictEqual( isAlmostSameValue( values[ i ], values[ i ], 1 ), true, 'returns expected value' ); + } + t.end(); +}); + +tape( 'the function returns `true` if provided two half-precision floating-point numbers which are approximately the same value within a specified number of ULPs', function test( t ) { + t.strictEqual( isAlmostSameValue( 1.0, 1.0+EPS, 1 ), true, 'returns expected value' ); + t.strictEqual( isAlmostSameValue( 1.0+EPS, 1.0, 1 ), true, 'returns expected value' ); + t.strictEqual( isAlmostSameValue( 1.0, 1.0+EPS+EPS, 2 ), true, 'returns expected value' ); + t.end(); +}); + +tape( 'the function returns `false` if provided two half-precision floating-point numbers which are not approximately the same value within a specified number of ULPs', function test( t ) { + t.strictEqual( isAlmostSameValue( 1.0, 1.0+EPS, 0 ), false, 'returns expected value' ); + t.strictEqual( isAlmostSameValue( 1.0+EPS, 1.0, 0 ), false, 'returns expected value' ); + t.strictEqual( isAlmostSameValue( 1.0, 1.0+EPS+EPS, 1 ), false, 'returns expected value' ); + t.end(); +}); + +tape( 'the function distinguishes between signed zeros when the specified number of ULPs is zero', function test( t ) { + t.strictEqual( isAlmostSameValue( 0.0, -0.0, 0 ), false, 'returns expected value' ); + t.strictEqual( isAlmostSameValue( -0.0, 0.0, 0 ), false, 'returns expected value' ); + t.strictEqual( isAlmostSameValue( 0.0, -0.0, 1 ), true, 'returns expected value' ); + t.strictEqual( isAlmostSameValue( -0.0, 0.0, 1 ), true, 'returns expected value' ); + t.end(); +});