prodAAT.F

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C This subroutines computes C(NEL,3,3) which is the product [C] = [A][A]T
!||====================================================================
!||    prodaat     ../engine/source/materials/tools/prodAAT.F
!||--- called by ------------------------------------------------------
!||    calcmatb    ../engine/source/materials/mat/mat100/calcmatb.F
!||    sigeps100   ../engine/source/materials/mat/mat100/sigeps100.F90
!||    sigeps111   ../engine/source/materials/mat/mat111/sigeps111.F
!||    sigeps42    ../engine/source/materials/mat/mat042/sigeps42.F
!||    sigeps95    ../engine/source/materials/mat/mat095/sigeps95.F
!||====================================================================
      SUBROUTINE prodaat(A, C, NEL)
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
      INTEGER,  INTENT(IN) ::  NEL
      my_real,  DIMENSION(NEL,3, 3),INTENT(IN) ::  a
      my_real,  DIMENSION(NEL,3, 3),INTENT(OUT) :: c 
C
      INTEGER  I
C-----------------------------------------------
      DO i =1, nel                                      
        c(i,1,1) = a(i,1,1)**2 + a(i,1,2)**2 + a(i,1,3)**2
        c(i,2,2) = a(i,2,1)**2 + a(i,2,2)**2 + a(i,2,3)**2
        c(i,3,3) = a(i,3,1)**2 + a(i,3,2)**2 + a(i,3,3)**2
        c(i,1,2) = a(i,1,1)*a(i,2,1) + a(i,1,2)*a(i,2,2) + a(i,1,3)*a(i,2,3)
        c(i,1,3) = a(i,1,1)*a(i,3,1) + a(i,1,2)*a(i,3,2) + a(i,1,3)*a(i,3,3)
        c(i,2,3) = a(i,2,1)*a(i,3,1) + a(i,2,2)*a(i,3,2) + a(i,2,3)*a(i,3,3)
        c(i,2,1) = c(i,1,2) 
        c(i,3,1) = c(i,1,3) 
        c(i,3,2) = c(i,2,3) 
      ENDDO                                             
C
      RETURN
      END