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erf
Langue: en
Version: 2007-07-26 (openSuse - 09/10/07)
Section: 3 (Bibliothèques de fonctions)
NAME
erf, erff, erfl, erfc, erfcf, erfcl - error function and complementary error functionSYNOPSIS
#include <math.h> double erf(double x);Link with -lm.
float erff(float x);
long double erfl(long double x); double erfc(double x);
float erfcf(float x);
long double erfcl(long double x);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
All functions described on this page: _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE || _ISOC99_SOURCE; or cc -std=c99
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
SVr4, 4.3BSD, C99. The float and long double variants are requirements of C99.SEE ALSO
cerf(3), exp(3)Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre