lgammad64 man page on HP-UX

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lgammad64(3M)							 lgammad64(3M)

NAME
       lgammad64(), lgammad128(), lgammad32() - decimal log gamma functions

SYNOPSIS
DESCRIPTION
       returns	,  where  is  defined  as the integral, as t goes from zero to
       infinity, of times t to the power (x−1).

       The sign of is returned in the external integer

       is not reentrant because it uses the global variable

       The function can be used to calculate

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

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

       These math functions are supported for HP-UX 11i	 Version  3  September
       2008 Update and forward.

USAGE
       To use any of these functions, compile with the option.

       Make sure your program defines and then includes

       Link in the math library by specifying or on the linking command line.

       For more information, see the at the following site:

RETURN VALUE
       returns +0.

       returns +0.

       returns	+infinity  and raises the divide-by-zero floating-point excep‐
       tion for x a negative integer or zero.

       If x returns +infinity.

       If x is NaN, returns NaN.

       returns +infinity (or, in some non-default  rounding  direction	modes,
       the  maximum  finite  number) 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 or zero, sets to

       If the correct value would overflow, sets to

SEE ALSO
       expd64(3M), logd64(3M), tgammad64(3M), math(5).

STANDARDS CONFORMANCE
       These  functions	 conform  to ISO/IEC TR 24732, "Extension for the pro‐
       gramming language C to support decimal floating-point arithmetic".

			   HP Integrity Server Only		 lgammad64(3M)
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