erff man page on Solaris

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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)\(**\|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(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			   │
       └─────────────────────────────┴─────────────────────────────┘

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

SunOS 5.10			  12 Jul 2006			       erf(3M)
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