Package Exports
- @stdlib/math-base-special-trunc
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Readme
Truncate
Round a double-precision floating-point number toward zero.
Installation
npm install @stdlib/math-base-special-truncUsage
var trunc = require( '@stdlib/math-base-special-trunc' );trunc( x )
Rounds a double-precision floating-point number toward zero.
var v = trunc( -4.2 );
// returns -4.0
v = trunc( 9.99999 );
// returns 9.0
v = trunc( 0.0 );
// returns 0.0
v = trunc( -0.0 );
// returns -0.0
v = trunc( NaN );
// returns NaN
v = trunc( Infinity );
// returns Infinity
v = trunc( -Infinity );
// returns -InfinityExamples
var randu = require( '@stdlib/random-base-randu' );
var trunc = require( '@stdlib/math-base-special-trunc' );
var x;
var i;
for ( i = 0; i < 100; i++ ) {
x = (randu()*100.0) - 50.0;
console.log( 'trunc(%d) = %d', x, trunc( x ) );
}C APIs
Installation
npm install @stdlib/math-base-special-truncUsage
#include "stdlib/math/base/special/trunc.h"stdlib_base_trunc( x )
Rounds a double-precision floating-point number toward zero.
double y = stdlib_base_trunc( 3.14 );
// returns 3.0The function accepts the following arguments:
- x:
[in] doubleinput value.
double stdlib_base_trunc( const double x );Examples
#include "stdlib/math/base/special/trunc.h"
#include <stdio.h>
int main() {
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_trunc( x[ i ] );
printf( "trunc(%lf) = %lf\n", x[ i ], y );
}
}Notice
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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 © 2016-2021. The Stdlib Authors.