SLATEC Routines --- PSIXN ---

*DECK PSIXN
      FUNCTION PSIXN (N)
C***BEGIN PROLOGUE  PSIXN
C***SUBSIDIARY
C***PURPOSE  Subsidiary to EXINT
C***LIBRARY   SLATEC
C***TYPE      SINGLE PRECISION (PSIXN-S, DPSIXN-D)
C***AUTHOR  Amos, D. E., (SNLA)
C***DESCRIPTION
C
C     This subroutine returns values of PSI(X)=derivative of log
C     GAMMA(X), X .GT. 0.0 at integer arguments. A table look-up is
C     performed for N .LE. 100, and the asymptotic expansion is
C     evaluated for N .GT. 100.
C
C***SEE ALSO  EXINT
C***ROUTINES CALLED  R1MACH
C***REVISION HISTORY  (YYMMDD)
C   800501  DATE WRITTEN
C   890531  Changed all specific intrinsics to generic.  (WRB)
C   891214  Prologue converted to Version 4.0 format.  (BAB)
C   900328  Added TYPE section.  (WRB)
C   910722  Updated AUTHOR section.  (ALS)
C***END PROLOGUE  PSIXN