?? stencil4.f
字號(hào):
REAL*8 AA(513,513), DD(513,513) REAL*8 X (513,513), Y (513,513) REAL*8 RX(513,513), RY(513,513) DO J = 2,N-1 DO I = 2,N-1 XX = X(I+1,J)-X(I-1,J) YX = Y(I+1,J)-Y(I-1,J) XY = X(I,J+1)-X(I,J-1) YY = Y(I,J+1)-Y(I,J-1) A = 0.25 * (XY*XY+YY*YY) B = 0.25* (XX*XX+YX*YX) C = 0.125 * (XX*XY+YX*YY) AA(I,J) = -B DD(I,J) = B+B+A*REL PXX = X(I+1,J)-2.*X(I,J)+X(I-1,J) QXX = Y(I+1,J)-2.*Y(I,J)+Y(I-1,J) PYY = X(I,J+1)-2.*X(I,J)+X(I,J-1) QYY = Y(I,J+1)-2.*Y(I,J)+Y(I,J-1) PXY = X(I+1,J+1)-X(I+1,J-1)-X(I-1,J+1)+X(I-1,J-1) QXY = Y(I+1,J+1)-Y(I+1,J-1)-Y(I-1,J+1)+Y(I-1,J-1) RX(I,J) = A*PXX+B*PYY-C*PXY RY(I,J) = A*QXX+B*QYY-C*QXY END DO END DO?? 快捷鍵說(shuō)明
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