(x)
return 1.0 - _erf_taylor(x)
erfc of a real number.
erfc of a real number.
erfc of a real number .
def erfc(x):
    """
    erfc of a real number.
    """
    x = float(x)
    if x != x:
        return x
    if x < 0.0:
        if x < -6.0:
            return 2.0
        return 2.0-erfc(-x)
    if x > 9.0:
        return _erfc_asymp(x)
    if x >= 1.0:
        return _erfc_mid(x)
    return 1.0 - _erf_taylor(x)
def erfc ( x ) : x = float ( x ) if x != x : return x if x < 0.0 : if x < - 6.0 : return 2.0 return 2.0 - erfc ( - x ) if x > 9.0 : return _erfc_asymp ( x ) if x >= 1.0 : return _erfc_mid ( x ) return 1.0 - _erf_taylor ( x )