Erfc - complementary error function
x Erfc -> result
0.5 erfc -> 0.4795
Computes the error function
erfc(x) = 1 - erf(x) = 2/sqrt(pi) int_x^inf dt exp(-t^2)
x (double): error function argument
Requires the GSL.
http://sources.redhat.com/gsl/ref
H E Plesser
2001-07-30
/usr/src/packages/BUILD/sli/specialfunctionsmodule.h