Calculates the error function of the argument.
Include
<math.h>
Prototype
long double erfl(long double x);
Argument
x
Return Value
Calculates the error function of the argument, being the summation of the error function from zero to the argument value.
Example
#include <math.h>
#include <stdio.h>
int main(void)
{
double x, y;
x = 0.5;
y = erfl(x);
printf("The summation of the error function from 0 to %f is %f\n", x, y);
x = -0.75;
y = erfl(x);
printf("The summation of the error function from 0 to %f is %f\n", x, y);
}
Example Output
The summation of the error function from 0 to 0.500000 is 0.520500
The summation of the error function from 0 to -0.750000 is -0.711156