stdlib-js
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About stdlib...
</summary>
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isSameValuef
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Test if two single-precision floating-point numbers are the same value.
bash
npm install @stdlib/number-float32-base-assert-is-same-value
javascript
var isSameValuef = require( '@stdlib/number-float32-base-assert-is-same-value' );
#### isSameValuef( a, b )
Tests if two single-precision floating-point numbers a and b are the same value.
javascript
var toFloat32 = require( '@stdlib/number-float64-base-to-float32' );
var bool = isSameValuef( toFloat32( 3.14 ), toFloat32( 3.14 ) );
// returns true
bool = isSameValuef( toFloat32( 5.0 ), toFloat32( 3.0 ) );
// returns false
In contrast to the strict equality operator ===, the function distinguishes between +0 and -0 and treats NaNs as the same value.
javascript
var bool = ( 0.0 === -0.0 );
// returns true
bool = isSameValuef( 0.0, -0.0 );
// returns false
bool = isSameValuef( -0.0, -0.0 );
// returns true
bool = ( NaN === NaN );
// returns false
bool = isSameValuef( NaN, NaN );
// returns true
javascript
var toFloat32 = require( '@stdlib/number-float64-base-to-float32' );
var isSameValuef = require( '@stdlib/number-float32-base-assert-is-same-value' );
var bool = isSameValuef( toFloat32( 3.14 ), toFloat32( 3.14 ) );
// returns true
bool = isSameValuef( toFloat32( 0.0 ), toFloat32( 0.0 ) );
// returns true
bool = isSameValuef( toFloat32( -0.0 ), toFloat32( 0.0 ) );
// returns false
bool = isSameValuef( toFloat32( NaN ), toFloat32( NaN ) );
// returns true
c
#include "stdlib/number/float32/base/assert/is_same_value.h"
#### stdlib_base_float32_is_same_value( a, b )
Tests if two single-precision floating-point numbers a and b are the same value.
c
#include <stdbool.h>
bool v = stdlib_base_float32_is_same_value( 3.14f, 3.14f );
// returns true
v = stdlib_base_float32_is_same_value( 0.0f, -0.0f );
// returns false
The function accepts the following arguments:
- a: [in] float first input value.
- b: [in] float second input value.
c
bool stdlib_base_float32_is_same_value( const float a, const float b );
c
#include "stdlib/number/float32/base/assert/is_same_value.h"
#include <stdbool.h>
#include <stdio.h>
int main( void ) {
const float a[] = {
5.0f,
-2.0f,
0.0f,
0.0f/0.0f
};
const float b[] = {
5.0f,
2.0f,
-0.0f,
0.0f/0.0f
};
bool v;
int i;
for ( i = 0; i < 4; i++ ) {
v = stdlib_base_float32_is_same_value( a[ i ], b[ i ] );
printf( "Same value? %s\n", ( v ) ? "True" : "False" );
}
}
