# erfl(3m) [sunos man page]

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

NAME
erf, erff, erfl - error function

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

double erf(double x);

float erff(float x);

long double erfl(long double x);

DESCRIPTION
These functions compute the error function of their argument x, defined as:

2/sqrt(pi)(**|integral from 0 to x of exp(-t(**t) dt

Equation that computes error function of x.

RETURN VALUES
Upon successful completion, these functions return the value of the error function.

If x is NaN, a NaN is returned.

If x is +-0, +-0 is returned.

If x is +-Inf, +-1 is returned.

If x is subnormal, 2/sqrt() * 2 is returned.

ATTRIBUTES
See attributes(5) for descriptions of the following attributes:

+-----------------------------+-----------------------------+
|      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
+-----------------------------+-----------------------------+
|Interface Stability	     |Standard			   |
+-----------------------------+-----------------------------+
|MT-Level		     |MT-Safe			   |
+-----------------------------+-----------------------------+

erfc(3M), feclearexcept(3M), fetestexcept(3M), isnan(3M), math.h(3HEAD), attributes(5), standards(5)

SunOS 5.10							    1 Nov 2003								   erf(3M)```

## Check Out this Related Man Page

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

NAME
erf, erff, erfl - error function

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

double erf(double x);

float erff(float x);

long double erfl(long double x);

DESCRIPTION
These functions compute the error function of their argument x, defined as:

2/sqrt(pi)*intregral from 0 to x of exp(-t*t) dt

RETURN VALUES
Upon successful completion, these functions return the value of the error function.

If x is NaN, a NaN is returned.

If x is +-0, +-0 is returned.

If x is +-Inf, +-1 is returned.

If x is subnormal, 2/sqrt(pi) * 2 is returned.

ATTRIBUTES
See attributes(5) for descriptions of the following attributes:

+-----------------------------+-----------------------------+
|      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
+-----------------------------+-----------------------------+
|Interface Stability	     |Standard			   |
+-----------------------------+-----------------------------+
|MT-Level		     |MT-Safe			   |
+-----------------------------+-----------------------------+

erfc(3M), feclearexcept(3M), fetestexcept(3M), isnan(3M), math.h(3HEAD), attributes(5), standards(5)

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