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Floor
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Round a double-precision floating-point number toward negative infinity.
bash
npm install @stdlib/math-base-special-floor
javascript
var floor = require( '@stdlib/math-base-special-floor' );
#### floor( x )
Rounds a double-precision floating-point number toward negative infinity.
javascript
var v = floor( -4.2 );
// returns -5.0
v = floor( 9.99999 );
// returns 9.0
v = floor( 0.0 );
// returns 0.0
v = floor( NaN );
// returns NaN
javascript
var randu = require( '@stdlib/random-base-randu' );
var floor = require( '@stdlib/math-base-special-floor' );
var x;
var i;
for ( i = 0; i < 100; i++ ) {
x = (randu()*100.0) - 50.0;
console.log( 'floor(%d) = %d', x, floor( x ) );
}
c
#include "stdlib/math/base/special/floor.h"
#### stdlib_base_floor( x )
Rounds a double-precision floating-point number toward negative infinity.
c
double y = stdlib_base_floor( 3.14 );
// returns 3.0
The function accepts the following arguments:
- x: [in] double input value.
c
double stdlib_base_floor( const double x );
c
#include "stdlib/math/base/special/floor.h"
#include <stdio.h>
int main( void ) {
const 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_floor( x[ i ] );
printf( "floor(%lf) = %lf\n", x[ i ], y );
}
}
@stdlib/math-base/special/ceil][@stdlib/math/base/special/ceil]: round a double-precision floating-point number toward positive infinity.
- [@stdlib/math-base/special/round][@stdlib/math/base/special/round]: round a numeric value to the nearest integer.
