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erff(3m) [opensolaris 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 | +-----------------------------+-----------------------------+ SEE ALSO
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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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 | +-----------------------------+-----------------------------+ SEE ALSO
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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