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log_gamma (Rev #2, changes)

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Description

log_gamma(x) computes the natural logarithm of the absolute value of the Gamma (\\Gamma) function.

Standard

(削除) Fortran 2008 and later (削除ここまで)(追記) Fortran 2008 (追記ここまで)(追記) and later (追記ここまで)

Class

(削除) Elemental function (削除ここまで)(追記) Elemental function (追記ここまで)

Syntax

x = log_gamma(x)

Arguments

• x - Shall be of type real and neither zero nor a negative integer.

Return value

The return value is of type real of the same kind as x.

Example

program test_log_gamma
 real :: x = 1.0
 x = lgamma(x) ! returns 0.0
end program test_log_gamma

See also

Gamma function: gamma

Revision from April 30, 2009 22:51:59 by Jason Blevins

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