README.md

isEven

Test if a 32-bit integer is even.

Usage

var isEven = require( '@stdlib/math/base/assert/int32-is-even' );

isEven( x )

Tests if 32-bit integer is even.

var bool = isEven( 5 );
// returns false

bool = isEven( -2 );
// returns true

bool = isEven( 0 );
// returns true

Examples

var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
var logEachMap = require( '@stdlib/console/log-each-map' );
var isEven = require( '@stdlib/math/base/assert/int32-is-even' );

var opts = {
    'dtype': 'int32'
};
var x = discreteUniform( 100, 0, 100, opts );

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

---

C APIs

Usage

#include "stdlib/math/base/assert/int32_is_even.h"

stdlib_base_int32_is_even( x )

Tests if 32-bit integer is even.

#include <stdbool.h>

bool out = stdlib_base_int32_is_even( -2 );
// returns true

out = stdlib_base_int32_is_even( 5 );
// returns false

The function accepts the following arguments:

• x: [in] int32_t input value.

bool stdlib_base_int32_is_even( const int32_t x );

Examples

#include "stdlib/math/base/assert/int32_is_even.h"
#include <stdio.h>
#include <stdbool.h>
#include <stdint.h>

int main( void ) {
    const int32_t x[] = { 5, -5, 3, -3, 0, 2 };

    bool b;
    int i;
    for ( i = 0; i < 5; i++ ) {
        b = stdlib_base_int32_is_even( x[ i ] );
        printf( "Value: %d. int32 Is even? %s.\n", x[ i ], ( b ) ? "True" : "False" );
    }
}

---

See Also

• @stdlib/math/base/assert/is-even: test if a finite numeric value is an even number.
• @stdlib/math/base/assert/int32-is-odd: test if a 32-bit integer is odd.