C Copyright(C) 1999-2020 National Technology & Engineering Solutions
C of Sandia, LLC (NTESS).  Under the terms of Contract DE-NA0003525 with
C NTESS, the U.S. Government retains certain rights in this software.
C
C See packages/seacas/LICENSE for details

C=======================================================================
      SUBROUTINE MPMUL2(N,X0,Y0,MAT,RES1,RES2,RES3,RES4)
      DIMENSION X0(*),Y0(*),MAT(4,4),RES1(*),RES2(*),RES3(*),RES4(*)
      REAL MAT

      DO 3040 I = 1,N
         RES1(I) = MAT(1,1)*X0(I) + MAT(2,1)*Y0(I) + MAT(4,1)
         RES2(I) = MAT(1,2)*X0(I) + MAT(2,2)*Y0(I) + MAT(4,2)
         RES3(I) = MAT(1,3)*X0(I) + MAT(2,3)*Y0(I) + MAT(4,3)
         RES4(I) = MAT(1,4)*X0(I) + MAT(2,4)*Y0(I) + MAT(4,4)
 3040 CONTINUE
      RETURN

      END