# dgamma.f

          DOUBLE PRECISION FUNCTION DGAMMA (X)
    C***BEGIN PROLOGUE  DGAMMA
    C***PURPOSE  Compute the complete Gamma function.
    C***LIBRARY   SLATEC (FNLIB)
    C***CATEGORY  C7A
    C***TYPE      DOUBLE PRECISION (GAMMA-S, DGAMMA-D, CGAMMA-C)
    C***KEYWORDS  COMPLETE GAMMA FUNCTION, FNLIB, SPECIAL FUNCTIONS
    C***AUTHOR  Fullerton, W., (LANL)
    C***DESCRIPTION
    C
    C DGAMMA(X) calculates the double precision complete Gamma function
    C for double precision argument X.
    C
    C Series for GAM        on the interval  0.          to  1.00000E+00
    C                                        with weighted error   5.79E-32
    C                                         log weighted error  31.24
    C                               significant figures required  30.00
    C                                    decimal places required  32.05
    C
    C***REFERENCES  (NONE)
    C***ROUTINES CALLED  D1MACH, D9LGMC, DCSEVL, DGAMLM, INITDS, XERMSG
    C***REVISION HISTORY  (YYMMDD)
    C   770601  DATE WRITTEN
    C   890531  Changed all specific intrinsics to generic.  (WRB)
    C   890911  Removed unnecessary intrinsics.  (WRB)
    C   890911  REVISION DATE from Version 3.2
    C   891214  Prologue converted to Version 4.0 format.  (BAB)
    C   900315  CALLs to XERROR changed to CALLs to XERMSG.  (THJ)
    C   920618  Removed space from variable name.  (RWC, WRB)
    C***END PROLOGUE  DGAMMA