Test whether an unsigned integer is a power of 2.
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> Test whether an unsigned integer is a power of 2.
``bash`
npm install @stdlib/math-base-assert-uint32-is-pow2
`javascript`
var isPow2Uint32 = require( '@stdlib/math-base-assert-uint32-is-pow2' );
#### isPow2Uint32( x )
Tests whether x is a power of 2.
`javascript
var bool = isPow2Uint32( 2 );
// returns true
bool = isPow2Uint32( 5 );
// returns false
`
`javascript
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`
#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.
`c
#include
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.
`c`
bool stdlib_base_uint32_is_pow2( const uint32_t x );
`c
#include "stdlib/math/base/assert/uint32_is_pow2.h"
#include
#include
#include
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 < 10; i++ ) {
b = stdlib_base_uint32_is_pow2( x[ i ] );
printf( "Value: %u. is a power of 2? %s.\n", x[ i ], ( b ) ? "True" : "False" );
}
}
`
*
This package is part of [stdlib][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][stdlib], see the main project [repository][stdlib].
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