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feat: add constants/float16/sign-mask
PR-URL: #8743 Co-authored-by: Athan Reines <kgryte@gmail.com> Reviewed-by: Athan Reines <kgryte@gmail.com>
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‎lib/node_modules/@stdlib/constants/float16/sign-mask/README.md‎

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<!--
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@license Apache-2.0
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Copyright (c) 2025 The Stdlib Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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# FLOAT16_SIGN_MASK
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> Mask for the sign bit of a [half-precision floating-point number][ieee754].
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<section class="usage">
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## Usage
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<!-- eslint-disable id-length -->
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```javascript
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var FLOAT16_SIGN_MASK = require( '@stdlib/constants/float16/sign-mask' );
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```
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#### FLOAT16_SIGN_MASK
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Mask for the sign bit of a [half-precision floating-point number][ieee754].
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<!-- eslint-disable id-length -->
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```javascript
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// 0x8000 = 32768 => 1 00000 0000000000
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var bool = ( FLOAT16_SIGN_MASK === 0x8000 );
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// returns true
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```
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</section>
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<!-- /.usage -->
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<section class="notes">
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</section>
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<!-- /.notes -->
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<section class="examples">
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## Examples
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<!-- eslint-disable id-length -->
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<!-- eslint no-undef: "error" -->
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```javascript
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var toWord = require( '@stdlib/number/float16/base/to-word' );
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var FLOAT16_SIGN_MASK = require( '@stdlib/constants/float16/sign-mask' );
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var x = -11.5;
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var w = toWord( x ); // 1 10010 0111000000
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// returns 51648
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// Mask off all bits except for the sign bit:
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var out = (w & FLOAT16_SIGN_MASK)>>>0; // 1 00000 0000000000
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// returns 32768
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// Turn off the sign bit and leave other bits unchanged:
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out = w & (~FLOAT16_SIGN_MASK); // 0 10010 0111000000
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// returns 18880
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```
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</section>
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<!-- /.examples -->
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<!-- C interface documentation. -->
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* * *
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<section class="c">
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## C APIs
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<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->
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<section class="intro">
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</section>
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<!-- /.intro -->
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<!-- C usage documentation. -->
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<section class="usage">
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### Usage
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```c
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#include "stdlib/constants/float16/sign_mask.h"
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```
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#### STDLIB_CONSTANT_FLOAT16_SIGN_MASK
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Macro for the mask for the sign bit of a [half-precision floating-point number][ieee754].
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</section>
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<!-- /.usage -->
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<!-- C API usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="notes">
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</section>
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<!-- /.notes -->
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<!-- C API usage examples. -->
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<section class="examples">
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</section>
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<!-- /.examples -->
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</section>
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<!-- /.c -->
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<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
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<section class="related">
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</section>
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<!-- /.related -->
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<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="links">
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[ieee754]: https://en.wikipedia.org/wiki/IEEE_754-1985
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<!-- <related-links> -->
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<!-- </related-links> -->
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</section>
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<!-- /.links -->

‎lib/node_modules/@stdlib/constants/float16/sign-mask/docs/repl.txt‎

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{{alias}}
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Mask for the sign bit of a half-precision floating-point number.
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Examples
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--------
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> {{alias}}
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32768
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> {{alias:@stdlib/number/uint16/base/to-binary-string}}( {{alias}} )
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'1000000000000000'
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See Also
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--------
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‎lib/node_modules/@stdlib/constants/float16/sign-mask/docs/types/index.d.ts‎

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/*
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* @license Apache-2.0
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*
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* Copyright (c) 2025 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// TypeScript Version: 4.1
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/**
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* Mask for the sign bit of a half-precision floating-point number.
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*
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* @example
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* var mask = FLOAT16_SIGN_MASK;
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* // returns 32768
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*/
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declare const FLOAT16_SIGN_MASK: number;
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// EXPORTS //
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export = FLOAT16_SIGN_MASK;

‎lib/node_modules/@stdlib/constants/float16/sign-mask/docs/types/test.ts‎

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/*
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* @license Apache-2.0
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*
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* Copyright (c) 2025 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import FLOAT16_SIGN_MASK = require( './index' );
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// TESTS //
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// The export is a number...
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{
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// eslint-disable-next-line @typescript-eslint/no-unused-expressions
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FLOAT16_SIGN_MASK; // $ExpectType number
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}

‎lib/node_modules/@stdlib/constants/float16/sign-mask/examples/index.js‎

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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2025 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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var toWord = require( '@stdlib/number/float16/base/to-word' );
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var toBinaryString = require( '@stdlib/number/uint16/base/to-binary-string' );
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var FLOAT16_SIGN_MASK = require( './../lib' );
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var x = -11.5;
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var w = toWord( x );
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console.log( 'Word: %s', toBinaryString( w ) );
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var out = (w & FLOAT16_SIGN_MASK)>>>0;
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console.log( 'Isolate sign bits: %s', toBinaryString( out ) );
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out = w & (~FLOAT16_SIGN_MASK);
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console.log( 'Turn off sign bits: %s', toBinaryString( out ) );

‎lib/node_modules/@stdlib/constants/float16/sign-mask/include/stdlib/constants/float16/sign_mask.h‎

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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2025 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef STDLIB_CONSTANTS_FLOAT16_SIGN_MASK_H
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#define STDLIB_CONSTANTS_FLOAT16_SIGN_MASK_H
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/**
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* Macro for the mask for the sign bit of a half-precision floating-point number.
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*/
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#define STDLIB_CONSTANT_FLOAT16_SIGN_MASK 0x8000
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#endif // !STDLIB_CONSTANTS_FLOAT16_SIGN_MASK_H

‎lib/node_modules/@stdlib/constants/float16/sign-mask/lib/index.js‎

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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2025 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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/**
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* Mask for the sign bit of a half-precision floating-point number.
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*
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* @module @stdlib/constants/float16/sign-mask
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* @type {uinteger16}
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*
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* @example
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* var FLOAT16_SIGN_MASK = require( '@stdlib/constants/float16/sign-mask' );
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* // returns 32768
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*/
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// MAIN //
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/**
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* Mask for the sign bit of a half-precision floating-point number.
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*
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* ## Notes
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*
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* The mask for the sign bit of a half-precision floating-point number is an unsigned 16-bit integer with the value \\( 32768 \\), which corresponds to the bit sequence
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*
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* ```binarystring
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* 1 00000 0000000000
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* ```
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*
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* @constant
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* @type {uinteger16}
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* @default 0x8000
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* @see [IEEE 754]{@link https://en.wikipedia.org/wiki/IEEE_754-1985}
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*/
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var FLOAT16_SIGN_MASK = 0x8000>>>0;
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// EXPORTS //
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module.exports = FLOAT16_SIGN_MASK;

‎lib/node_modules/@stdlib/constants/float16/sign-mask/manifest.json‎

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{
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"options": {},
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"fields": [
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{
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"field": "src",
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"resolve": true,
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"relative": true
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},
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{
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"field": "include",
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"resolve": true,
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"relative": true
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},
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{
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"field": "libraries",
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"resolve": false,
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"relative": false
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},
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{
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"field": "libpath",
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"resolve": true,
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"relative": false
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}
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],
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"confs": [
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{
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"src": [],
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"include": [
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"./include"
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],
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"libraries": [],
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"libpath": [],
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"dependencies": []
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}
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]
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}

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