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    The following form allows you to view linux man pages.

    Command:

    gammal

    
    
    

    SYNOPSIS

           #include <math.h>
    
           double gamma(double x);
           float gammaf(float x);
           long double gammal(long double x);
    
           Link with -lm.
    
       Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
    
           gamma():
               _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE
           gammaf(), gammal():
               _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600
    
    
    

    DESCRIPTION

           These  functions  are  deprecated: instead, use either the tgamma(3) or
           the lgamma(3) functions, as appropriate.
    
           For the definition of the Gamma function, see tgamma(3).
    
       *BSD version
           The libm in 4.4BSD and some versions of FreeBSD had a gamma()  function
           that computes the Gamma function, as one would expect.
    
       glibc version
           Glibc  has  a gamma() function that is equivalent to lgamma(3) and com-
           putes the natural logarithm of the Gamma function.
    
    
    

    RETURN VALUE

           See lgamma(3).
    
    
    

    ERRORS

           See lgamma(3).
    
    
    

    CONFORMING TO

           Because of historical variations in behavior across systems, this func-
           tion is not specified in any standard.
    
    
    

    NOTES

       History
           4.2BSD  had  a gamma() that computed ln(|Gamma(|x|)|), leaving the sign
           of Gamma(|x|) in the external integer signgam.  In 4.3BSD the name  was
           changed to lgamma(3), and the man page promises
    
               "At  some  time  in the future the name gamma will be rehabilitated
               and used for the Gamma function"
    
           This did indeed happen in 4.4BSD,  where  gamma()  computes  the  Gamma
           function (with no effect on signgam).  However, this came too late, and
           we now have tgamma(3), the "true gamma" function.
    
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