Query: erfc
OS: freebsd
Section: 3
Links: freebsd man pages all man pages
Forums: forum home forum categories
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
ERF(3) BSD Library Functions Manual ERF(3)NAMEerf, erff, erfl, erfc, erfcf, erfcl -- error function operatorsLIBRARYMath Library (libm, -lm)SYNOPSIS#include <math.h> double erf(double x); float erff(float x); long double erfl(long double x); double erfc(double x); float erfcf(float x); long double erfcl(long double x);DESCRIPTIONThese functions calculate the error function of x. The erf(), erff(), and erfl() functions calculate the error function of x; where erf(x) = 2/sqrt(pi)*integral from 0 to x of exp(-t*t) dt. The erfc(), erfcf(), and erfcl() functions calculate the complementary error function of x; that is erfc() subtracts the result of the error function erf(x) from 1.0.SEE ALSOmath(3)HISTORYThe erf() and erfc() functions appeared in 4.3BSD.BSDJuly 13, 2014 BSD