@stdlib/math-base-special-truncf NPM

Truncate

$NPM version$ $Build Status$ $Coverage Status$

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 );
    }
}

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.