SLATEC Routines --- ALNGAM ---

*DECK ALNGAM
      FUNCTION ALNGAM (X)
C***BEGIN PROLOGUE  ALNGAM
C***PURPOSE  Compute the logarithm of the absolute value of the Gamma
C            function.
C***LIBRARY   SLATEC (FNLIB)
C***CATEGORY  C7A
C***TYPE      SINGLE 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 ALNGAM(X) computes the logarithm of the absolute value of the
C gamma function at X.
C
C***REFERENCES  (NONE)
C***ROUTINES CALLED  GAMMA, R1MACH, R9LGMC, 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   900326  Removed duplicate information from DESCRIPTION section.
C           (WRB)
C   900727  Added EXTERNAL statement.  (WRB)
C***END PROLOGUE  ALNGAM