XL Fortran for AIX 8.1

Language Reference

+-------------------------------IBM Extension--------------------------------+

GAMMA(X)

Gamma function.



gammax

X
must be of type real.

Class

Elemental function

Result Type and Attributes

Same as X.

Result Value

The result has a value that approximates Gamma(X).

Examples

GAMMA (1.0) has the value 1.0.

GAMMA (10.0) has the value 362880.0 (approximately).


Specific Name Argument Type Result Type Pass As Arg?
GAMMA (1) default real default real yes
DGAMMA (2) double precision real double precision real yes
QGAMMA (3) REAL(16) REAL(16) yes

X must satisfy the inequality:

  1. -2.0**23 < X <= 35.0401, except for nonpositive integral values

  2. -2.0**52 < X <= 171.6243, except for nonpositive integral values

  3. -2.0**105 < X <= 171.6243, except for nonpositive integral values 

+----------------------------End of IBM Extension----------------------------+

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