@stdlib/number-float32-base-to-uint32 NPM

toUint32

Convert a single-precision floating-point number to an unsigned 32-bit integer.

Installation

npm install @stdlib/number-float32-base-to-uint32

Usage

var float32ToUint32 = require( '@stdlib/number-float32-base-to-uint32' );

float32ToUint32( x )

Converts a single-precision floating-point number to an unsigned 32-bit integer.

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

var y = float32ToUint32( float64ToFloat32( 4294967297.0 ) );
// returns 0

y = float32ToUint32( float64ToFloat32( 3.14 ) );
// returns 3

y = float32ToUint32( float64ToFloat32( -3.14 ) );
// returns 4294967293

y = float32ToUint32( float64ToFloat32( NaN ) );
// returns 0

y = float32ToUint32( float64ToFloat32( Infinity ) );
// returns 0

y = float32ToUint32( float64ToFloat32( -Infinity ) );
// returns 0

Examples

var randu = require( '@stdlib/random-base-randu' );
var round = require( '@stdlib/math-base-special-round' );
var MAX_INT = require( '@stdlib/constants-uint32-max' );
var float64ToFloat32 = require( '@stdlib/number-float64-base-to-float32' );
var float32ToUint32 = require( '@stdlib/number-float32-base-to-uint32' );

var uint32;
var half;
var f32;
var i;

half = ( MAX_INT-1 ) / 2;
for ( i = 0; i < 500; i++ ) {
    // Generate a random single-precision floating-point integer:
    f32 = float64ToFloat32( round( randu()*MAX_INT ) - half );

    // Convert the single-precision floating-point value to an unsigned 32-bit integer:
    uint32 = float32ToUint32( f32 );

    console.log( 'float32: %d => uint32: %d', f32, uint32 );
}

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.