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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 72d218235f
commit f23f22d71c
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Task/Vector-products/XPL0/vector-products.xpl0 Normal file
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include c:\cxpl\codes; \intrinsic 'code' declarations
func DotProd(A, B); \Return the dot product of two 3D vectors
int A, B; \A ù B
return A(0)*B(0) + A(1)*B(1) + A(2)*B(2);
proc CrossProd(A, B, C); \Calculate the cross product of two 3D vectors
int A, B, C; \C:= A x B
[C(0):= A(1)*B(2) - A(2)*B(1);
C(1):= A(2)*B(0) - A(0)*B(2);
C(2):= A(0)*B(1) - A(1)*B(0);
]; \CrossProd
func ScalarTriProd(A, B, C); \Return the scalar triple product
int A, B, C; \A ù (B x C)
int D(3);
[CrossProd(B, C, D);
return DotProd(A, D);
]; \ScalarTriProd
proc VectTriProd(A, B, C, D); \Calculate the vector triple product
int A, B, C, D; \D:= A x (B x C)
int E(3);
[CrossProd(B, C, E);
CrossProd(A, E, D);
]; \CrossProd
int A, B, C, D(3);
[A:= [3, 4, 5]; B:= [4, 3, 5]; C:= [-5, -12, -13];
IntOut(0, DotProd(A,B)); CrLf(0);
CrossProd(A, B, D);
IntOut(0, D(0)); ChOut(0, 9\tab\);
IntOut(0, D(1)); ChOut(0, 9\tab\);
IntOut(0, D(2)); CrLf(0);
IntOut(0, ScalarTriProd(A,B,C)); CrLf(0);
VectTriProd(A, B, C, D);
IntOut(0, D(0)); ChOut(0, 9\tab\);
IntOut(0, D(1)); ChOut(0, 9\tab\);
IntOut(0, D(2)); CrLf(0);
]