Package Exports

@stdlib/math-base-assert-is-evenf
@stdlib/math-base-assert-is-evenf/dist
@stdlib/math-base-assert-is-evenf/dist/index.js
@stdlib/math-base-assert-is-evenf/lib/index.js

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Readme

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isEvenf

$NPM version$ $Build Status$ $Coverage Status$

Test if a finite single-precision floating-point number is an even number.

Installation

npm install @stdlib/math-base-assert-is-evenf

Usage

var isEvenf = require( '@stdlib/math-base-assert-is-evenf' );

isEvenf( x )

Tests if a finite single-precision floating-point number is an even number.

var bool = isEvenf( 5.0 );
// returns false

bool = isEvenf( -2.0 );
// returns true

bool = isEvenf( 0.0 );
// returns true

bool = isEvenf( NaN );
// returns false

Notes

The function assumes a finite number. If provided positive or negative infinity, the function will return true, when, in fact, the result is undefined. If x can be infinite, wrap the implementation as follows:

function check( x ) {
    return (
        x < Infinity &&
        x > -Infinity &&
        isEvenf( x )
    );
}

var bool = check( Infinity );
// returns false

bool = check( -Infinity );
// returns false

Examples

var discreteUniform = require( '@stdlib/random-array-discrete-uniform' );
var logEachMap = require( '@stdlib/console-log-each-map' );
var isEvenf = require( '@stdlib/math-base-assert-is-evenf' );

var opts = {
    'dtype': 'float32'
};
var x = discreteUniform( 100, 0, 100, opts );

function isEvenfWrapper( integer ) {
    return ( isEvenf( integer ) ) ? 'even' : 'not even';
}
logEachMap( '%d is %s', x, isEvenfWrapper );

C APIs

Usage

#include "stdlib/math/base/assert/is_evenf.h"

stdlib_base_is_evenf( x )

Tests if a finite single-precision floating-point number is an even number.

#include <stdbool.h>

bool out = stdlib_base_is_evenf( 1.0f );
// returns false

out = stdlib_base_is_evenf( 4.0f );
// returns true

The function accepts the following arguments:

x: [in] float input value.

bool stdlib_base_is_evenf( const float x );

Examples

#include "stdlib/math/base/assert/is_evenf.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>

int main( void ) {
    float x;
    bool v;
    int i;

    for ( i = 0; i < 100; i++ ) {
        x = ( ( (float)rand() / (float)RAND_MAX ) * 100.0f );
        v = stdlib_base_is_evenf( x );
        printf( "x = %f, is_evenf(x) = %s\n", x, ( v ) ? "even" : "not even" );
    }
}

@stdlib/math-base-assert-is-evenf

Package Exports

Readme

isEvenf

Installation

Usage

isEvenf( x )

Notes

Examples

C APIs

Usage

stdlib_base_is_evenf( x )

Examples

Notice

Community

License

Copyright