valib
Vortex Analysis LIBrary
delta.h
1 
5 #ifndef VA_DELTA_H
6 #define VA_DELTA_H
7 
8 #include "common_defs.h"
9 #include "linalg3.h"
10 
11 /***************************************************************************/
49 VA_DEVICE_FUN void valib_delta(VA_REAL *A, VA_REAL *delta)
50 {
51  VA_REAL Q, R;
52 
53  // find second invariant
54  valib_second_invariant3(A, &Q);
55 
56  // find third invariant (determinant)
57  valib_determinant3(A, &R);
58 
59  // determine delta
60  *delta = Q*Q*Q / (VA_REAL) 27. + R*R / (VA_REAL) 4.;
61 }
62 
63 #endif // VA_DELTA_H
valib_determinant3
VA_DEVICE_FUN void valib_determinant3(VA_REAL *A, VA_REAL *det)
Definition: linalg3.h:293
valib_delta
VA_DEVICE_FUN void valib_delta(VA_REAL *A, VA_REAL *delta)
-criterion
Definition: delta.h:49
valib_second_invariant3
VA_DEVICE_FUN void valib_second_invariant3(VA_REAL *A, VA_REAL *second_invariant)
Definition: linalg3.h:282