erfc man page on SmartOS

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```erfc(3M)		Mathematical Library Functions		      erfc(3M)

NAME
erfc, erfcf, erfcl - complementary error function

SYNOPSIS
c99 [ flag... ] file... -lm [ library... ]
#include <math.h>

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 attributes:

┌─────────────────────────────┬─────────────────────────────┐
│      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability	     │Standard			   │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level		     │MT-Safe			   │
└─────────────────────────────┴─────────────────────────────┘

SunOS 5.11			  12 Jul 2006			      erfc(3M)
```
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