@stdlib/math-base-assert-uint32-is-pow2 NPM

isPow2Uint32

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

Test whether an unsigned integer is a power of 2.

Installation

npm install @stdlib/math-base-assert-uint32-is-pow2

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" );
    }
}

Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.