erfc, erfcf, erfcl - Complement of error function (mathematical)

Definition	#include <math.h> double erfc(double x); float erfcf(float x); (C11) long double erfcl(long double x); (C11) erfc, erfcf and erfcl calculate the complement of the error function for a floating-point number x: 1.0 - erf, 1.0 - erff and 1.0 - erfl.
Return val.	Value of the complement of the error function for x
Note	These functions are provided due to the resulting loss of accuracy when the error functions erf, erff resp. erfl are called for large values of x .
See also	erf, erff, erfl