osf1 man page for erf

Query: erf

OS: osf1

Section: 3

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erf(3)							     Library Functions Manual							    erf(3)

NAME
erf, erfc - Error functions
LIBRARY
Math Library (libm.a)
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);
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: erf(): XPG4 erfc(): XPG4 Refer to the standards(5) reference page for more information about industry standards and associated tags.
DESCRIPTION
The erf(), erff(), and erfl() functions return the error function of x, where erf(x), erff(x), and erfl(x) equal (2/sqrt(pi)) times the area under the curve e**(-t**2) between 0 and x. The erfc(), erfcf(), and erfcl() functions return (1.0 - erf(x)). The erfc() function can result in an underflow as x gets large. delim off erf(3)
Related Man Pages
erf(3) - suse
erff(3) - suse
erfl(3) - suse
erfc(3m) - sunos
erfl(3m) - sunos
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