ERFC (3sciport)

Returns the complementary error function

SYNOPSIS

  result = ERFC( x )

FUNCTION VALUE

  erfc            Real.
                  The complementary error function of x.

ARGUMENTS

  x               Real.
                  Input argument.

DESCRIPTION

  The external real function ERFC returns the complementary error function of
  x. The complementary error function is defined as:

          erfc(x) = 1.0 - erf(x)

  ERFC is implemented as a separate routine to improve accuracy.

  For equations and other information, see Volume 3: UNICOS Math and
  Scientific Library Reference Manual SR-2081 7.0, Cray Research, Inc.