      FUNCTION PIMACH(DUM)
C***BEGIN PROLOGUE  PIMACH
C
C     This subprogram supplies the value of the constant PI correct to
C     machine precision where
C
C     PI=3.1415926535897932384626433832795028841971693993751058209749446
C***ROUTINES CALLED  (NONE)
C***END PROLOGUE  PIMACH
C
C***FIRST EXECUTABLE STATEMENT  PIMACH
      PIMACH = 3.14159265358979
      RETURN
      END