qrrota2.F

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!||====================================================================
!||    qrrota2   ../engine/source/elements/solid_2d/quad/qrrota2.F
!||--- called by ------------------------------------------------------
!||    qforc2    ../engine/source/elements/solid_2d/quad/qforc2.F
!||====================================================================
      SUBROUTINE qrrota2(
     1   R22,     R23,     R32,     R33,
     2   F11,     F21,     F12,     F22,
     3   T11,     T21,     T12,     T22,
     4   T13,     T23,     T14,     T24,
     5   NEL)
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   G l o b a l   P a r a m e t e r s
C-----------------------------------------------
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER, INTENT(IN) :: NEL
C     REAL
      my_real
     .   R22(*), R23(*), R32(*), R33(*),
     .   F11(*), F21(*), F12(*), F22(*),
     .   t11(*), t21(*), t12(*), t22(*),
     .   t13(*), t23(*), t14(*), t24(*)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER I
C     REAL
      my_real
     .   Y,Z
C-----------------------------------------------
C     X=RX' <=> X'=t(R)X chgt de base.
      DO i=1,nel
        y=r22(i)*f11(i)+r32(i)*f21(i)
        z=r23(i)*f11(i)+r33(i)*f21(i)
        f11(i)=y
        f21(i)=z
      END DO
      DO i=1,nel
        y=r22(i)*f12(i)+r32(i)*f22(i)
        z=r23(i)*f12(i)+r33(i)*f22(i)
        f12(i)=y
        f22(i)=z
      END DO
      DO i=1,nel
        y=r22(i)*t11(i)+r32(i)*t21(i)
        z=r23(i)*t11(i)+r33(i)*t21(i)
        t11(i)=y
        t21(i)=z
      END DO
      DO i=1,nel
        y=r22(i)*t12(i)+r32(i)*t22(i)
        z=r23(i)*t12(i)+r33(i)*t22(i)
        t12(i)=y
        t22(i)=z
      END DO
      DO i=1,nel
        y=r22(i)*t13(i)+r32(i)*t23(i)
        z=r23(i)*t13(i)+r33(i)*t23(i)
        t13(i)=y
        t23(i)=z
      END DO
      DO i=1,nel
        y=r22(i)*t14(i)+r32(i)*t24(i)
        z=r23(i)*t14(i)+r33(i)*t24(i)
        t14(i)=y
        t24(i)=z
      END DO
c~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      RETURN
      END