# c9lgmc.f

          COMPLEX FUNCTION C9LGMC (ZIN)
    C***BEGIN PROLOGUE  C9LGMC
    ....
    ....
    Warning:   this routine is not intended to be user-callable.
    ....
    ....
    C***SUBSIDIARY
    C***PURPOSE  Compute the log gamma correction factor so that
    C            LOG(CGAMMA(Z)) = 0.5*LOG(2.*PI) + (Z-0.5)*LOG(Z) - Z
    C            + C9LGMC(Z).
    C***LIBRARY   SLATEC (FNLIB)
    C***CATEGORY  C7A
    C***TYPE      COMPLEX (R9LGMC-S, D9LGMC-D, C9LGMC-C)
    C***KEYWORDS  COMPLETE GAMMA FUNCTION, CORRECTION TERM, FNLIB,
    C             LOG GAMMA, LOGARITHM, SPECIAL FUNCTIONS
    C***AUTHOR  Fullerton, W., (LANL)
    C***DESCRIPTION
    C
    C Compute the LOG GAMMA correction term for large ABS(Z) when REAL(Z)
    C .GE. 0.0 and for large ABS(AIMAG(Y)) when REAL(Z) .LT. 0.0.  We find
    C C9LGMC so that
    C   LOG(Z) = 0.5*LOG(2.*PI) + (Z-0.5)*LOG(Z) - Z + C9LGMC(Z)
    C
    C***REFERENCES  (NONE)
    C***ROUTINES CALLED  R1MACH, XERMSG
    C***REVISION HISTORY  (YYMMDD)
    C   780401  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   900326  Removed duplicate information from DESCRIPTION section.
    C           (WRB)
    C   900720  Routine changed from user-callable to subsidiary.  (WRB)
    C***END PROLOGUE  C9LGMC