tgamma(3M)																tgamma(3M)

NAME

       tgamma(), tgammaf(), tgammal(), tgammaw(), tgammaq() - true gamma functions

SYNOPSIS

DESCRIPTION

       The function computes the true gamma function of x.

       In contrast, the and functions compute the log of gamma.

       is a version of it takes a argument and returns a result.

       is a version of it takes a argument and returns a result.

       is an version of it takes an argument and returns an result.

       is equivalent to on HP-UX systems.

USAGE

       To use these functions compile either with the default option or with the and options.

       To use or compile also with the option.

       To use any of these functions, make sure your program includes and link in the math library by specifying on the compiler or linker command
       line.

       For more information, see the at the following site:

RETURN VALUE

       If x and raises the divide-by-zero exception.

       If x is a negative integer, returns a NaN and raises the invalid exception.

       If x equals -INFINITY, returns a NaN and raises the invalid exception.

       If x equals +INFINITY, returns +INFINITY.

       If x is NaN, returns NaN.

       returns infinity (equal to in lieu of a value whose magnitude is too large, and raises the overflow and inexact exceptions.

       raises the inexact exception whenever a rounded result does not equal the mathematical result.

ERRORS

       If x is a negative integer, sets to [EDOM].

       HP-UX functions on Integrity servers do not set by default.  For setting, compile with the option.

SEE ALSO

       exp(3M), lgamma(3M), log(3M), math(5).

STANDARDS CONFORMANCE

       : ISO/IEC C99 (including Annex F, ``IEC 60559 floating-point arithmetic'')

							     HP Integrity Server Only							tgamma(3M)