npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

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

v0.2.2

Published

Return an unsigned 32-bit integer corresponding to the IEEE 754 binary representation of a single-precision floating-point number.

Downloads

175,755

Readme

toWord

NPM version Build Status Coverage Status

Return an unsigned 32-bit integer corresponding to the IEEE 754 binary representation of a single-precision floating-point number.

Installation

npm install @stdlib/number-float32-base-to-word

Usage

var toWordf = require( '@stdlib/number-float32-base-to-word' );

toWordf( x )

Returns an unsigned 32-bit integer corresponding to the IEEE 754 binary representation of a single-precision floating-point number.

var float64ToFloat32 = require( '@stdlib/number-float64-base-to-float32' );

var f32 = float64ToFloat32( 1.337 );
// returns 1.3370000123977661

var w = toWordf( f32 ); // => 0 01111111 01010110010001011010001
// returns 1068180177

Notes

  • The equivalent of this function in C/C++,

    unsigned int toWordf(float x) {
        return *(unsigned int*)&x;
    }

Examples

var float64ToFloat32 = require( '@stdlib/number-float64-base-to-float32' );
var randu = require( '@stdlib/random-base-randu' );
var toWordf = require( '@stdlib/number-float32-base-to-word' );

var word;
var f64;
var f32;
var i;

// Convert single-precision floating-point numbers to integers representing the binary literal...
for ( i = 0; i < 1000; i++ ) {
    f64 = (randu()*100.0) - 50.0;
    f32 = float64ToFloat32( f64 );
    word = toWordf( f32 );
    console.log( 'float64: %d => float32: %d => word: %d', f64, f32, word );
}

C APIs

Usage

#include "stdlib/number/float32/base/to_word.h"

stdlib_base_float32_to_word( x, *word )

Converts a single-precision floating-point number to an unsigned 32-bit integer corresponding to the number's IEEE 754 binary representation.

#include <stdint.h>

uint32_t word;
stdlib_base_float32_to_word( 3.14f, &word );

The function accepts the following arguments:

  • x: [in] float input value.
  • word: [out] uint32_t* destination.
void stdlib_base_float32_to_word( const float x, uint32_t *word );

stdlib_base_float32_word_t

An opaque type definition for a union for converting between a single-precision floating-point number and an unsigned 32-bit integer.

#include <stdint.h>

stdlib_base_float32_word_t w;

// Assign a single-precision floating-point number:
w.value = 3.14f;

// Retrieve the word:
uint32_t word = w.word;

The union has the following members:

Examples

#include "stdlib/number/float32/base/to_word.h"
#include <stdint.h>
#include <stdio.h>

int main( void ) {
    float x[] = { 3.14f, -3.14f, 0.0f, 0.0f/0.0f };

    uint32_t word;
    int i;
    for ( i = 0; i < 4; i++ ) {
        stdlib_base_float32_to_word( x[ i ], &word );
        printf( "%f => word: %u\n", x[ i ], word );
    }
}

See Also


Notice

This package is part of 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, see the main project repository.

Community

Chat


License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.