Compute the absolute value of a double-precision floating-point number.
The absolute value is defined as
var abs = require( '@stdlib/math/base/special/abs' );Computes the absolute value of a double-precision floating-point number.
var v = abs( -1.0 );
// returns 1.0
v = abs( 2.0 );
// returns 2.0
v = abs( 0.0 );
// returns 0.0
v = abs( -0.0 );
// returns 0.0
v = abs( NaN );
// returns NaNvar discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
var logEachMap = require( '@stdlib/console/log-each-map' );
var abs = require( '@stdlib/math/base/special/abs' );
var x = discreteUniform( 100, -100, 100, {
'dtype': 'float64'
});
logEachMap( 'abs(%d) = %d', x, abs );#include "stdlib/math/base/special/abs.h"Computes the absolute value of a double-precision floating-point number.
double y = stdlib_base_abs( -5.0 );
// returns 5.0The function accepts the following arguments:
- x:
[in] doubleinput value.
double stdlib_base_abs( const double x );#include "stdlib/math/base/special/abs.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_abs( x[ i ] );
printf( "|%lf| = %lf\n", x[ i ], y );
}
}@stdlib/math/base/special/abs2: compute the squared absolute value of a double-precision floating-point number.@stdlib/math/base/special/absf: compute the absolute value of a single-precision floating-point number.@stdlib/math/base/special/labs: compute an absolute value of a signed 32-bit integer.