CDECK  ID>, VXINVB.
      SUBROUTINE VXINVB (MV,NW)

C CERN PROGLIB# M434    VXINVB          .VERSION KERNVMI  1.01  891208
C ORIG.  12-June-87, F. Carminati + J. Zoll

C-    VX invert bytes, in-place
C-    Fortran version, slower than the machine-language routine

      DIMENSION    MV(99)
      LOGICAL*1    LLD(4),    LST(4)
      EQUIVALENCE (LLD,MLD), (LST,MST)

      DO 29  J=1,NW
      MLD    = MV(J)
      LST(1) = LLD(4)
      LST(2) = LLD(3)
      LST(3) = LLD(2)
      LST(4) = LLD(1)
      MV(J)  = MST
   29 CONTINUE
      END
