stdlib-js
<summary>
About stdlib...
</summary>
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toWord
[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url]
Return an unsigned 32-bit integer corresponding to the [IEEE 754][ieee754] binary representation of a [single-precision floating-point number][ieee754].
bash
npm install @stdlib/number-float32-base-to-word
javascript
var toWordf = require( '@stdlib/number-float32-base-to-word' );
#### toWordf( x )
Returns an unsigned 32-bit integer corresponding to the [IEEE 754][ieee754] binary representation of a [single-precision floating-point number][ieee754].
javascript
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
c
unsigned int toWordf(float x) {
return *(unsigned int*)&x;
}
javascript
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
#include "stdlib/number/float32/base/to_word.h"
#### stdlib_base_float32_to_word( x, *word )
Converts a [single-precision floating-point number][ieee754] to an unsigned 32-bit integer corresponding to the number's [IEEE 754][ieee754] binary representation.
c
#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.
c
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][ieee754] and an unsigned 32-bit integer.
c
#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:
- value: float [single-precision floating-point number][ieee754].
- word: uint32_t word.
c
#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 );
}
}
@stdlib/number-float32/base/from-word][@stdlib/number/float32/base/from-word]: create a single-precision floating-point number from an unsigned integer corresponding to an IEEE 754 binary representation.
- [@stdlib/number-float64/base/to-words][@stdlib/number/float64/base/to-words]: split a double-precision floating-point number into a higher order word and a lower order word.
