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@stdlib/number-float32-base-from-word

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Create a single-precision floating-point number from an unsigned integer corresponding to an IEEE 754 binary representation.

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<!-- @license Apache-2.0 Copyright (c) 2018 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. --> <details> <summary> About stdlib... </summary> <p>We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.</p> <p>The library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases.</p> <p>When you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there.</p> <p>To join us in bringing numerical computing to the web, get started by checking us out on <a href="https://github.com/stdlib-js/stdlib">GitHub</a>, and please consider <a href="https://opencollective.com/stdlib">financially supporting stdlib</a>. We greatly appreciate your continued support!</p> </details> # fromWordf [![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] <!-- [![dependencies][dependencies-image]][dependencies-url] --> > Create a [single-precision floating-point number][ieee754] from an unsigned integer corresponding to an [IEEE 754][ieee754] binary representation. <section class="installation"> ## Installation ```bash npm install @stdlib/number-float32-base-from-word ``` </section> <section class="usage"> ## Usage ```javascript var fromWordf = require( '@stdlib/number-float32-base-from-word' ); ``` #### fromWordf( word ) Creates a [single-precision floating-point number][ieee754] from an unsigned `integer` corresponding to an [IEEE 754][ieee754] binary representation. ```javascript var word = 1068180177; // => 0 01111111 01010110010001011010001 var f32 = fromWordf( word ); // when printed, implicitly promoted to float64 // returns 1.3370000123977661 ``` </section> <!-- /.usage --> <section class="notes"> ## Notes - The equivalent of this function in C/C++, ```c float fromWordf(unsigned int x) { return *(float*)&x; } ``` </section> <!-- /.notes --> <section class="examples"> ## Examples <!-- eslint no-undef: "error" --> ```javascript var randu = require( '@stdlib/random-base-randu' ); var round = require( '@stdlib/math-base-special-round' ); var MAX_UINT32 = require( '@stdlib/constants-uint32-max' ); var fromWordf = require( '@stdlib/number-float32-base-from-word' ); var word; var f32; var i; // Create single-precision floating-point numbers from unsigned integers... for ( i = 0; i < 1000; i++ ) { word = round( randu()*MAX_UINT32 ); f32 = fromWordf( word ); console.log( 'word: %d => float32: %d', word, f32 ); } ``` </section> <!-- /.examples --> <!-- C interface documentation. --> * * * <section class="c"> ## C APIs <!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. --> <section class="intro"> </section> <!-- /.intro --> <!-- C usage documentation. --> <section class="usage"> ### Usage ```c #include "stdlib/number/float32/base/from_word.h" ``` #### stdlib_base_float32_from_word( word, \*x ) Creates a [single-precision floating-point number][ieee754] from an unsigned 32-bit integer corresponding to an [IEEE 754][ieee754] binary representation. ```c #include <stdint.h> uint32_t word = 1078523331; float x; stdlib_base_float32_from_word( word, &x ); ``` The function accepts the following arguments: - **word**: `[in] uint32_t` input word. - **x**: `[out] float*` destination for a single-precision floating-point number. ```c void stdlib_base_float32_from_word( const uint32_t word, float *x ); ``` </section> <!-- /.usage --> <!-- C API usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. --> <section class="notes"> </section> <!-- /.notes --> <!-- C API usage examples. --> <section class="examples"> ### Examples ```c #include "stdlib/number/float32/base/from_word.h" #include <stdint.h> #include <stdio.h> int main( void ) { uint32_t word = 1078523331; float x; int i; for ( i = 0; i < 10; i++ ) { stdlib_base_float32_from_word( word+(uint32_t)(i*10), &x ); printf( "word: %u => %f\n", word, x ); } } ``` </section> <!-- /.examples --> </section> <!-- /.c --> <!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. --> <section class="related"> * * * ## See Also - <span class="package-name">[`@stdlib/number-float64/base/from-words`][@stdlib/number/float64/base/from-words]</span><span class="delimiter">: </span><span class="description">create a double-precision floating-point number from a higher order word and a lower order word.</span> </section> <!-- /.related --> <!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. --> <section class="main-repo" > * * * ## Notice This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more. For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib]. #### Community [![Chat][chat-image]][chat-url] --- ## License See [LICENSE][stdlib-license]. ## Copyright Copyright &copy; 2016-2024. The Stdlib [Authors][stdlib-authors]. </section> <!-- /.stdlib --> <!-- Section for all links. 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