isPow2Uint32

Test whether an unsigned integer is a power of 2.

Usage

var isPow2Uint32 = require( '@stdlib/math/base/assert/uint32-is-pow2' );

isPow2Uint32( x )

Tests whether x is a power of 2.

var bool = isPow2Uint32( 2 );
// returns true

bool = isPow2Uint32( 5 );
// returns false

Examples

var isPow2Uint32 = require( '@stdlib/math/base/assert/uint32-is-pow2' );

var i;

for ( i = 0; i < 100; i++ ) {
    console.log( 'isPow2( %d ) = %s', i, isPow2Uint32( i ) );
}

C APIs

Usage

#include "stdlib/math/base/assert/uint32_is_pow2.h"

stdlib_base_uint32_is_pow2( x )

Tests whether an unsigned integer is a power of 2.

#include <stdbool.h>

bool out = stdlib_base_uint32_is_pow2( 5 );
// returns false

out = stdlib_base_uint32_is_pow2( 2 );
// returns true

The function accepts the following arguments:

x: [in] uint32_t input value.

bool stdlib_base_uint32_is_pow2( const uint32_t x );

Examples

#include "stdlib/math/base/assert/uint32_is_pow2.h"
#include <stdio.h>
#include <stdbool.h>
#include <stdint.h>

int main( void ) {
    const uint32_t x[] = { 0, 1, 2, 3, 4, 5, 8, 10, 16, 1024 };
    bool b;
    int i;

    for ( i = 0; i < 9; i++ ) {
        b = stdlib_base_uint32_is_pow2( x[ i ] );
        printf( "Value: %u. is a power of 2? %s.\n", x[ i ], ( b ) ? "True" : "False" );
    }
}

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