Round a double-precision floating-point number toward positive infinity.
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> Round a double-precision floating-point number toward positive infinity.
``bash`
npm install @stdlib/math-base-special-ceil
`javascript`
var ceil = require( '@stdlib/math-base-special-ceil' );
#### ceil( x )
Rounds a double-precision floating-point number toward positive infinity.
`javascript
var v = ceil( -4.2 );
// returns -4.0
v = ceil( 9.99999 );
// returns 10.0
v = ceil( 0.0 );
// returns 0.0
v = ceil( NaN );
// returns NaN
`
`javascript
var uniform = require( '@stdlib/random-array-uniform' );
var logEachMap = require( '@stdlib/console-log-each-map' );
var ceil = require( '@stdlib/math-base-special-ceil' );
var opts = {
'dtype': 'float64'
};
var x = uniform( 100, -50.0, 50.0, opts );
logEachMap( 'ceil(%0.4f) = %0.4f', x, ceil );
`
*
`c`
#include "stdlib/math/base/special/ceil.h"
#### stdlib_base_ceil( x )
Rounds a double-precision floating-point number toward positive infinity.
`c`
double y = stdlib_base_ceil( 3.14 );
// returns 4.0
The function accepts the following arguments:
- x: [in] double input value.
`c`
double stdlib_base_ceil( const double x );
`c
#include "stdlib/math/base/special/ceil.h"
#include
int main( void ) {
const double x[] = { 3.14, -3.14, 0.0, 0.0/0.0 };
double y;
int i;
for ( i = 0; i < 4; i++ ) {
y = stdlib_base_ceil( x[ i ] );
printf( "ceil(%lf) = %lf\n", x[ i ], y );
}
}
`
*
- [@stdlib/math-base/special/ceiln][@stdlib/math/base/special/ceiln]: round a numeric value to the nearest multiple of 10^n toward positive infinity.
- [@stdlib/math-base/special/floor][@stdlib/math/base/special/floor]: round a double-precision floating-point number toward negative infinity.
- [@stdlib/math-base/special/round][@stdlib/math/base/special/round]: round a numeric value to the nearest integer.
*
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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---
See [LICENSE][stdlib-license].
Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
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[deno-url]: https://github.com/stdlib-js/math-base-special-ceil/tree/deno
[deno-readme]: https://github.com/stdlib-js/math-base-special-ceil/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/math-base-special-ceil/tree/umd
[umd-readme]: https://github.com/stdlib-js/math-base-special-ceil/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/math-base-special-ceil/tree/esm
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[@stdlib/math/base/special/ceiln]: https://www.npmjs.com/package/@stdlib/math-base-special-ceiln
[@stdlib/math/base/special/floor]: https://www.npmjs.com/package/@stdlib/math-base-special-floor
[@stdlib/math/base/special/round]: https://www.npmjs.com/package/@stdlib/math-base-special-round