Method: Math#erf

Defined in:
math.c

#erf(x) ⇒ Float (private)

Returns the value of the Gauss error function for x.

- Domain: <tt>[-INFINITY, INFINITY]</tt>.
- Range: <tt>[-1, 1]</tt>.

Examples:

  erf(-INFINITY) # => -1.0
  erf(0.0)       # => 0.0
  erf(INFINITY)  # => 1.0

Related: Math.erfc.

Returns:



874
875
876
877
878
 
# File 'math.c', line 874

static VALUE
math_erf(VALUE unused_obj, VALUE x)
{
    return DBL2NUM(erf(Get_Double(x)));
}