erfcinv
The inverse complementary error function is defined as
where erf^{-1}(z)
is the inverse error function.
Usage
var erfcinv = require( '@stdlib/math/base/special/erfcinv' );
erfcinv( x )
Evaluates the inverse complementary error function.
var y = erfcinv( 0.5 );
// returns ~0.4769
y = erfcinv( 0.8 );
// returns ~0.1791
y = erfcinv( 0.0 );
// returns Infinity
y = erfcinv( 2.0 );
// returns -Infinity
The domain of x
is restricted to [0,2]
. If x
is outside this interval, the function returns NaN
.
var y = erfcinv( -3.14 );
// returns NaN
If provided NaN
, the function returns NaN
.
var y = erfcinv( NaN );
// returns NaN
Examples
var linspace = require( '@stdlib/array/base/linspace' );
var erfcinv = require( '@stdlib/math/base/special/erfcinv' );
var x = linspace( 0.0, 2.0, 100 );
var i;
for ( i = 0; i < x.length; i++ ) {
console.log( 'x: %d, erfcinv(x): %d', x[ i ], erfcinv( x[ i ] ) );
}