@stdlib/math-base-special-truncf
v0.2.1
Published
Round a single-precision floating-point number toward zero.
Downloads
271
Readme
Truncate
Round a single-precision floating-point number toward zero.
Installation
npm install @stdlib/math-base-special-truncf
Usage
var truncf = require( '@stdlib/math-base-special-truncf' );
truncf( x )
Rounds a single-precision floating-point number toward zero.
var v = truncf( -4.2 );
// returns -4.0
v = truncf( 9.99999 );
// returns 9.0
v = truncf( 0.0 );
// returns 0.0
v = truncf( -0.0 );
// returns -0.0
v = truncf( NaN );
// returns NaN
v = truncf( Infinity );
// returns Infinity
v = truncf( -Infinity );
// returns -Infinity
Examples
var randu = require( '@stdlib/random-base-randu' );
var truncf = require( '@stdlib/math-base-special-truncf' );
var x;
var i;
for ( i = 0; i < 100; i++ ) {
x = (randu()*100.0) - 50.0;
console.log( 'trunc(%d) = %d', x, truncf( x ) );
}
C APIs
Usage
#include "stdlib/math/base/special/truncf.h"
stdlib_base_truncf( x )
Rounds a single-precision floating-point number toward zero.
float y = stdlib_base_truncf( 3.5f );
// returns 3.0f
The function accepts the following arguments:
- x:
[in] float
input value.
float stdlib_base_truncf( const float x );
Examples
#include "stdlib/math/base/special/truncf.h"
#include <stdio.h>
int main( void ) {
const float x[] = { 3.14f, -3.14f, 0.0f, 0.0f/0.0f };
float y;
int i;
for ( i = 0; i < 4; i++ ) {
y = stdlib_base_truncf( x[ i ] );
printf( "trunc(%f) = %f\n", x[ i ], y );
}
}
See Also
@stdlib/math-base/special/ceilf
: round a single-precision floating-point number toward positive infinity.@stdlib/math-base/special/floorf
: round a single-precision floating-point numeric value toward negative infinity.@stdlib/math-base/special/trunc
: round a double-precision floating-point number toward zero.
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.
Community
License
See LICENSE.
Copyright
Copyright © 2016-2024. The Stdlib Authors.