tgammad64(3M)tgammad64(3M)NAMEtgammad64(), tgammad128(), tgammad32() - decimal true gamma functions
SYNOPSISDESCRIPTION
The function computes the true gamma function of x.
In contrast, the function computes 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.
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
If x and raises the divide-by-zero exception.
If x is a negative integer, returns NaN and raises the invalid excep‐
tion.
If x equals -infinity, returns NaN and raises the invalid exception.
If x equals +infinity returns +infinity.
If x is NaN, returns NaN.
returns the properly signed infinity (or, in some non-default rounding
direction modes, the properly signed maximum-magnitude finite number)
in lieu of a value whose magnitude is too large, and raises the over‐
flow and inexact exceptions.
raises the underflow exception whenever a result is tiny (essentially
subnormal or zero) and inexact.
raises the inexact exception whenever a rounded result does not equal
the mathematical result.
ERRORS
If x is a negative integer, sets to
If x sets to
If the correct value would overflow, sets to
SEE ALSOexpd64(3M), lgammad64(3M), logd64(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 tgammad64(3M)
