 
      FUNCTION PSIXN(N)
C***BEGIN PROLOGUE  PSIXN
C***REFER TO  EXINT
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***ROUTINES CALLED  R1MACH
C***END PROLOGUE  PSIXN
