README.md

floorf

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

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 uniform = require( '@stdlib/random/array/uniform' );
var logEachMap = require( '@stdlib/console/log-each-map' );
var floorf = require( '@stdlib/math/base/special/floorf' );

var opts = {
    'dtype': 'float32'
};
var x = uniform( 100, -50.0, 50.0, opts );

logEachMap( 'floorf(%0.4f) = %d', x, floorf );

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C APIs

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( 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_floorf( x[ i ] );
        printf( "floorf(%f) = %f\n", x[ i ], y );
    }
}

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See Also

• @stdlib/math/base/special/ceilf: round a single-precision floating-point number toward positive infinity.
• @stdlib/math/base/special/floor: round a double-precision floating-point number toward negative infinity.