C Programming on the IBM PC (C Programmers Reference Guide Series)

2017-07-07 02:10:07

erf

#include <math.h>float erff(float arg);double erf(double arg); long double erfl(long double arg);

erf( ), erff( ), and erfl( ) were added by C99.

The erf( ) family of functions returns the error function of arg.

A related function is erfc( ).