Linux and UNIX Man Pages

Test Your Knowledge in Computers #522
Difficulty: Medium
11,223 = 0x2BD7
True or False?
Linux & Unix Commands - Search Man Pages

(freebsd section 3)
man page for erfc

ERF(3)							   BSD Library Functions Manual 						    ERF(3)

erf, erff, erfl, erfc, erfcf, erfcl -- error function operators LIBRARY
Math 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); DESCRIPTION
These 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 ALSO
math(3) HISTORY
The erf() and erfc() functions appeared in 4.3BSD. BSD
July 13, 2014 BSD

Featured Tech Videos