erfc
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NAME
erf, erfc - error function and complementary error func-
tion
SYNOPSIS
#include <math.h>
double erf(double x);
double erfc (double x);
DESCRIPTION
The erf() function returns the error function of x;
defined as
erf(x) = 2/sqrt(pi)* integral from 0 to x of exp(-t*t) dt
The erfc() function returns the complementary error func-
tion of x, that is 1.0 - erf(x).
CONFORMING TO
SVID 3, BSD 4.3
SEE ALSO
exp(3)
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Hurricane Electric.
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