HELPLIB.HLB  —  CRTL  tgamma
    Returns the gamma function of its argument.

    This function is supported on OpenVMS Integrity servers and
    Alpha only.

    Format

      #include  <math.h>

      double tgamma  (double x);

      float tgammaf  (float x);

      long double tgammal  (long double x);
Additional Information: explode extract
Argument Description Return Values
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