| Item | Value |
| Header file | math.h |
| Declaration | float erff(float arg); double erf(double arg); long double erfl(long double arg); |
| Return | returns the error function of arg. |
#include <math.h>
#include <stdio.h>
int main(void)
{
printf("Value of e to the first: %f.", erf(1.0));
}
Value of e to the first: 0.842701.
| 19.14.erf | ||||
| 19.14.1. | erf | |||