Mathematical Library Functions erfc(3M)
NAME
erfc, erfcf, erfcl - complementary error function
SYNOPSIS
c99 [ flag... ] file... -lm [ library... ]
#include
double erfc(double x); float erfcf(float x);long double erfcl(long double x);
DESCRIPTION
These function compute the complementary error function 1.0- erf(x).
RETURN VALUES
Upon successful completion, these functions return the value of the complementary error function. If x is NaN, a NaN is returned.If x is +_0, +1 is returned.
If x is -Inf, +2 is returned.
If x is +Inf, 0 is returned.ERRORS
No errors are defined.USAGE
The erfc() function is provided because of the extreme loss of relative accuracy if erf(x) is called for large x and the result subtracted from 1.0.ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:SunOS 5.11 Last change: 12 Jul 2006 1
Mathematical Library Functions erfc(3M)____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Interface Stability | Committed ||_____________________________|_____________________________|
| MT-Level | MT-Safe |
|_____________________________|_____________________________|
| Standard | See standards(5). ||_____________________________|_____________________________|
SEE ALSO
erf(3M), isnan(3M), math.h(3HEAD), attributes(5), stan-
dards(5)SunOS 5.11 Last change: 12 Jul 2006 2