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NAME

erf, erfc - error function and complementary error function

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 function of x, that is 1.0 - erf(x).

CONFORMING TO

SVID 3, BSD 4.3

SEE ALSO

exp(3)


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