Math.erf(x)  → float

Calculates the error function of x.

Source Code

/*
* call-seq:
*    Math.erf(x)  => float
*
*  Calculates the error function of x.
*/

static VALUE
math_erf(obj, x)
   VALUE obj, x;
{
   Need_Float(x);
   return rb_float_new(erf(RFLOAT(x)->value));
}