diff --git a/lib/node_modules/@stdlib/constants/float16/half-ln-two/README.md b/lib/node_modules/@stdlib/constants/float16/half-ln-two/README.md new file mode 100644 index 000000000000..75f6e3e1d0e9 --- /dev/null +++ b/lib/node_modules/@stdlib/constants/float16/half-ln-two/README.md @@ -0,0 +1,79 @@ + + +# FLOAT16_HALF_LN2 + +> One half times the natural logarithm of `2` as a half-precision floating-point number. + +
+ +## Usage + +```javascript +var FLOAT16_HALF_LN2 = require( '@stdlib/constants/float16/half-ln-two' ); +``` + +#### FLOAT16_HALF_LN2 + +One half times the natural logarithm of `2` as a half-precision floating-point number. + +```javascript +var bool = ( FLOAT16_HALF_LN2 === 0.3466796875 ); +// returns true +``` + +
+ + + +
+ +## Examples + + + + + +```javascript +var FLOAT16_HALF_LN2 = require( '@stdlib/constants/float16/half-ln-two' ); + +console.log( FLOAT16_HALF_LN2 ); +// => 0.3466796875 +``` + +
+ + + + + +
+ +
+ + + + + +
+ +
+ + diff --git a/lib/node_modules/@stdlib/constants/float16/half-ln-two/docs/repl.txt b/lib/node_modules/@stdlib/constants/float16/half-ln-two/docs/repl.txt new file mode 100644 index 000000000000..dcd21fa927bd --- /dev/null +++ b/lib/node_modules/@stdlib/constants/float16/half-ln-two/docs/repl.txt @@ -0,0 +1,13 @@ + +{{alias}} + One half times the natural logarithm of 2 as a half-precision + floating-point number. + + Examples + -------- + > {{alias}} + 0.3466796875 + + See Also + -------- + diff --git a/lib/node_modules/@stdlib/constants/float16/half-ln-two/docs/types/index.d.ts b/lib/node_modules/@stdlib/constants/float16/half-ln-two/docs/types/index.d.ts new file mode 100644 index 000000000000..85749124f14b --- /dev/null +++ b/lib/node_modules/@stdlib/constants/float16/half-ln-two/docs/types/index.d.ts @@ -0,0 +1,33 @@ +/* +* @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 + +/** +* One half times the natural logarithm of 2 as a half-precision floating-point number. +* +* @example +* var val = FLOAT16_HALF_LN2; +* // returns 0.3466796875 +*/ +declare const FLOAT16_HALF_LN2: number; + + +// EXPORTS // + +export = FLOAT16_HALF_LN2; diff --git a/lib/node_modules/@stdlib/constants/float16/half-ln-two/docs/types/test.ts b/lib/node_modules/@stdlib/constants/float16/half-ln-two/docs/types/test.ts new file mode 100644 index 000000000000..4388e7038f94 --- /dev/null +++ b/lib/node_modules/@stdlib/constants/float16/half-ln-two/docs/types/test.ts @@ -0,0 +1,28 @@ +/* +* @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 FLOAT16_HALF_LN2 = require( './index' ); + + +// TESTS // + +// The export is a number... +{ + // eslint-disable-next-line @typescript-eslint/no-unused-expressions + FLOAT16_HALF_LN2; // $ExpectType number +} diff --git a/lib/node_modules/@stdlib/constants/float16/half-ln-two/examples/index.js b/lib/node_modules/@stdlib/constants/float16/half-ln-two/examples/index.js new file mode 100644 index 000000000000..cf9131cb6758 --- /dev/null +++ b/lib/node_modules/@stdlib/constants/float16/half-ln-two/examples/index.js @@ -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. +*/ + +'use strict'; + +var FLOAT16_HALF_LN2 = require( './../lib' ); + +console.log( FLOAT16_HALF_LN2 ); +// => 0.3466796875 diff --git a/lib/node_modules/@stdlib/constants/float16/half-ln-two/lib/index.js b/lib/node_modules/@stdlib/constants/float16/half-ln-two/lib/index.js new file mode 100644 index 000000000000..bc60a07d5b2c --- /dev/null +++ b/lib/node_modules/@stdlib/constants/float16/half-ln-two/lib/index.js @@ -0,0 +1,50 @@ +/** +* @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'; + +/** +* One half times the natural logarithm of 2 as a half-precision floating-point number. +* +* @module @stdlib/constants/float16/half-ln-two +* @type {number} +* +* @example +* var FLOAT16_HALF_LN2 = require( '@stdlib/constants/float16/half-ln-two' ); +* // returns 0.3466796875 +*/ + +// MAIN // + +/** +* One half times the natural logarithm of 2 as a half-precision floating-point number. +* +* ```tex +* \frac{\ln 2}{2} +* ``` +* +* @constant +* @type {number} +* @default 0.3466796875 +*/ +var FLOAT16_HALF_LN2 = 0.3466796875; // 0x3EB17218 + + +// EXPORTS // + +module.exports = FLOAT16_HALF_LN2; diff --git a/lib/node_modules/@stdlib/constants/float16/half-ln-two/package.json b/lib/node_modules/@stdlib/constants/float16/half-ln-two/package.json new file mode 100644 index 000000000000..ebffebb3eab9 --- /dev/null +++ b/lib/node_modules/@stdlib/constants/float16/half-ln-two/package.json @@ -0,0 +1,70 @@ +{ + "name": "@stdlib/constants/float16/half-ln-two", + "version": "0.0.0", + "description": "One half times the natural logarithm of 2 as a half-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", + "directories": { + "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", + "stdmath", + "constant", + "const", + "mathematics", + "math", + "ln", + "ln2", + "half", + "natural", + "logarithm", + "log", + "ieee754", + "float", + "flt", + "precision", + "floating-point", + "float16" + ] +} diff --git a/lib/node_modules/@stdlib/constants/float16/half-ln-two/test/test.js b/lib/node_modules/@stdlib/constants/float16/half-ln-two/test/test.js new file mode 100644 index 000000000000..a88b09343940 --- /dev/null +++ b/lib/node_modules/@stdlib/constants/float16/half-ln-two/test/test.js @@ -0,0 +1,56 @@ +/** +* @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 lnf = require( '@stdlib/math/base/special/lnf' ); +var absf = require( '@stdlib/math/base/special/absf' ); +var EPS = require( '@stdlib/constants/float16/eps' ); +var float64ToFloat32 = require( '@stdlib/number/float64/base/to-float16' ); +var FLOAT16_HALF_LN2 = require( './../lib' ); + + +// TESTS // + +tape( 'main export is a number', function test( t ) { + t.ok( true, __filename ); + t.strictEqual( typeof FLOAT16_HALF_LN2, 'number', 'main export is a number' ); + t.end(); +}); + +tape( 'export is a half-precision floating-point number equal to `0.3466796875`', function test( t ) { + t.strictEqual( FLOAT16_HALF_LN2, float64ToFloat32( 3.46573590279972654709e-01 ), 'returns expected value' ); + t.end(); +}); + +tape( 'export equals `0.5*lnf(2)`', function test( t ) { + var delta; + var tol; + var v; + + v = float64ToFloat32( 0.5 * lnf( 2.0 ) ); + delta = absf( float64ToFloat32( v - FLOAT16_HALF_LN2 ) ); + tol = EPS * FLOAT16_HALF_LN2; + + t.ok( delta <= tol, 'equals 0.5*lnf(2) within tolerance '+tol ); + + t.end(); +});