..
  Copyright 1988-2021 Free Software Foundation, Inc.
  This is part of the GCC manual.
  For copying conditions, see the GPL license file

.. _erfc_scaled:

ERFC_SCALED --- Error function 
*******************************

.. index:: ERFC_SCALED

.. index:: error function, complementary, exponentially-scaled

.. function:: ERFC_SCALED(X)

  ``ERFC_SCALED(X)`` computes the exponentially-scaled complementary
  error function of :samp:`{X}`.

  :param X:
    The type shall be ``REAL``.

  :return:
    The return value is of type ``REAL`` and of the same kind as :samp:`{X}`.

  :samp:`{Standard}:`
    Fortran 2008 and later

  :samp:`{Class}:`
    Elemental function

  :samp:`{Syntax}:`

  .. code-block:: fortran

    RESULT = ERFC_SCALED(X)

  :samp:`{Example}:`

    .. code-block:: fortran

      program test_erfc_scaled
        real(8) :: x = 0.17_8
        x = erfc_scaled(x)
      end program test_erfc_scaled