@stdlib/math-base-special-floorf

Round a single-precision floating-point numeric value toward negative infinity.

Usage no npm install needed!

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  import stdlibMathBaseSpecialFloorf from 'https://cdn.skypack.dev/@stdlib/math-base-special-floorf';
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README

floorf

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Round a single-precision floating-point numeric value toward negative infinity.

Installation

npm install @stdlib/math-base-special-floorf

Usage

var floorf = require( '@stdlib/math-base-special-floorf' );

floorf( x )

Rounds a single-precision floating-point numeric value toward negative infinity.

var v = floorf( -4.2 );
// returns -5.0

v = floorf( 9.99999 );
// returns 9.0

v = floorf( 0.0 );
// returns 0.0

v = floorf( NaN );
// returns NaN

Examples

var randu = require( '@stdlib/random-base-randu' );
var floorf = require( '@stdlib/math-base-special-floorf' );

var x;
var i;

for ( i = 0; i < 100; i++ ) {
    x = (randu()*100.0) - 50.0;
    console.log( 'floorf(%d) = %d', x, floorf( x ) );
}

C APIs

Installation

npm install @stdlib/math-base-special-floorf

Usage

#include "stdlib/math/base/special/floorf.h"

stdlib_base_floorf( x )

Rounds a single-precision floating-point number toward negative infinity.

float y = stdlib_base_floorf( 3.14f );
// returns 3.0

The function accepts the following arguments:

  • x: [in] float input value.
float stdlib_base_floor( const float x );

Examples

#include "stdlib/math/base/special/floorf.h"
#include <stdio.h>

int main() {
    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_floorf( x[ i ] );
        printf( "floorf(%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.

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License

See LICENSE.

Copyright

Copyright © 2016-2021. The Stdlib Authors.