Package Exports
- @stdlib/math-base-special-ceil2
- @stdlib/math-base-special-ceil2/dist
- @stdlib/math-base-special-ceil2/dist/index.js
- @stdlib/math-base-special-ceil2/lib/index.js
This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (@stdlib/math-base-special-ceil2) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.
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ceil2
Round a numeric value to the nearest power of two toward positive infinity.
Installation
npm install @stdlib/math-base-special-ceil2Usage
var ceil2 = require( '@stdlib/math-base-special-ceil2' );ceil2( x )
Rounds a numeric value to the nearest power of two toward positive infinity.
var v = ceil2( -4.2 );
// returns -4.0
v = ceil2( -4.5 );
// returns -4.0
v = ceil2( -4.6 );
// returns -4.0
v = ceil2( 9.99999 );
// returns 16.0
v = ceil2( 9.5 );
// returns 16.0
v = ceil2( 13.0 );
// returns 16.0
v = ceil2( -13.0 );
// returns -8.0
v = ceil2( 0.0 );
// returns 0.0
v = ceil2( -0.0 );
// returns -0.0
v = ceil2( Infinity );
// returns Infinity
v = ceil2( -Infinity );
// returns -Infinity
v = ceil2( NaN );
// returns NaNExamples
var uniform = require( '@stdlib/random-array-uniform' );
var logEachMap = require( '@stdlib/console-log-each-map' );
var ceil2 = require( '@stdlib/math-base-special-ceil2' );
var opts = {
'dtype': 'float64'
};
var x = uniform( 100, -50.0, 50.0, opts );
logEachMap( 'x: %0.4f. Rounded: %0.4f.', x, ceil2 );C APIs
Usage
#include "stdlib/math/base/special/ceil2.h"stdlib_base_ceil2( x )
Rounds a numeric value to the nearest power of two toward positive infinity.
double y = stdlib_base_ceil2( 3.14 );
// returns 4.0The function accepts the following arguments:
- x:
[in] doubleinput value.
double stdlib_base_ceil2( const double x );Examples
#include "stdlib/math/base/special/ceil2.h"
#include <stdio.h>
int main( void ) {
const double x[] = { 3.14, -3.14, 0.5, 0.0 / 0.0 };
double y;
int i;
for ( i = 0; i < 4; i++ ) {
y = stdlib_base_ceil2( x[ i ] );
printf( "ceil2(%lf) = %lf\n", x[ i ], y );
}
}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.
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License
See LICENSE.
Copyright
Copyright © 2016-2026. The Stdlib Authors.