erfc in Fortran Wiki

## Description
`erfc(x)` computes the complementary error function of `x`, defined as
$$
1 - \\text{erf}(x) = 1 - \\frac{2}{\\sqrt{\\pi}} \\int_0^x e^{-t^2} dt.
$$
## Standard
[[Fortran 2008]] and later
## Class
[[Elemental function]]
## Syntax
~~~~~
result = erfc(x)
~~~~~
## Arguments
 - `x` - The type shall be `real`.
## Return value
The return value is of type `real` and of the same kind as `x`. It lies in the range 0ドル \\leq \\mathop{erfc}(x) \\leq 2$.
## Example
~~~~~ {: lang=fortran }
program test_erfc
 real(8) :: x = 0.17_8
 x = erfc(x)
end program test_erfc
~~~~~
category: intrinsics