# dlngam.f

          DOUBLE PRECISION FUNCTION DLNGAM (X)
    C***BEGIN PROLOGUE  DLNGAM
    C***PURPOSE  Compute the logarithm of the absolute value of the Gamma
    C            function.
    C***LIBRARY   SLATEC (FNLIB)
    C***CATEGORY  C7A
    C***TYPE      DOUBLE PRECISION (ALNGAM-S, DLNGAM-D, CLNGAM-C)
    C***KEYWORDS  ABSOLUTE VALUE, COMPLETE GAMMA FUNCTION, FNLIB, LOGARITHM,
    C             SPECIAL FUNCTIONS
    C***AUTHOR  Fullerton, W., (LANL)
    C***DESCRIPTION
    C
    C DLNGAM(X) calculates the double precision logarithm of the
    C absolute value of the Gamma function for double precision
    C argument X.
    C
    C***REFERENCES  (NONE)
    C***ROUTINES CALLED  D1MACH, D9LGMC, DGAMMA, XERMSG
    C***REVISION HISTORY  (YYMMDD)
    C   770601  DATE WRITTEN
    C   890531  Changed all specific intrinsics to generic.  (WRB)
    C   890531  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   900727  Added EXTERNAL statement.  (WRB)
    C***END PROLOGUE  DLNGAM