| ERF(3) | Library Functions Manual | ERF(3) | 
erf, erff,
  erfl, erfc,
  erfcf, erfcl —
#include <math.h>
double
  
  erf(double
    x);
float
  
  erff(float
    x);
long double
  
  erfl(long
    double x);
double
  
  erfc(double
    x);
float
  
  erfcf(float
    x);
long double
  
  erfcl(long
    double x);
The erf() calculates the error function of
    x; where
The erfc() function calculates the
    complementary error function of x; that is
    erfc() subtracts the result of the error function
    erf(x) from 1.0. This is
    useful, since for large x places disappear.
erf() and erfc() functions
  appeared in 4.3BSD.
| November 7, 2015 | NetBSD 9.4 |