NAME

erf, erfc − error function

SYNOPSIS

­double erf(double x)

­double erfc(double x)

DESCRIPTION

These functions calculate the error function erf(x) and the complementary error function erfc(x). The error criterion for both ­erf and ­erfc is relative. 

DIAGNOSTICS

There are no error returns. 

Plan 9  —  January 03, 1993