Actual source code: ex35.c

  1: static char help[] = "Tests PetscSortReal(), PetscSortRealWithArrayInt(), PetscFindReal\n\n";

  3: #include <petscsys.h>

  5: int main(int argc, char **argv)
  6: {
  7:   PetscInt  i, loc;
  8:   PetscReal val;
  9:   PetscReal x[]      = {39, 9, 19, -39, 29, 309, 209, 390, 12, 11};
 10:   PetscReal x2[]     = {39, 9, 19, -39, 29, 309, 209, 390, 12, 11};
 11:   PetscReal x3[]     = {39, 9, 19, -39, 29, 309, 209, 390, 12, 11};
 12:   PetscInt  index2[] = {1, -1, 4, 12, 13, 14, 0, 7, 9, 11};
 13:   PetscInt  index3[] = {1, -1, 4, 12, 13, 14, 0, 7, 9, 11};

 15:   PetscFunctionBeginUser;
 16:   PetscCall(PetscInitialize(&argc, &argv, NULL, help));
 17:   PetscCall(PetscPrintf(PETSC_COMM_SELF, "1st test\n"));
 18:   for (i = 0; i < 5; i++) PetscCall(PetscPrintf(PETSC_COMM_SELF, " %g\n", (double)x[i]));
 19:   PetscCall(PetscPrintf(PETSC_COMM_SELF, "---------------\n"));
 20:   PetscCall(PetscSortReal(5, x));
 21:   for (i = 0; i < 5; i++) PetscCall(PetscPrintf(PETSC_COMM_SELF, " %g\n", (double)x[i]));

 23:   PetscCall(PetscPrintf(PETSC_COMM_SELF, "\n2nd test\n"));
 24:   for (i = 0; i < 10; i++) PetscCall(PetscPrintf(PETSC_COMM_SELF, " %g\n", (double)x[i]));
 25:   PetscCall(PetscPrintf(PETSC_COMM_SELF, "---------------\n"));
 26:   PetscCall(PetscSortReal(10, x));
 27:   for (i = 0; i < 10; i++) PetscCall(PetscPrintf(PETSC_COMM_SELF, " %g\n", (double)x[i]));

 29:   PetscCall(PetscPrintf(PETSC_COMM_SELF, "\n3rd test\n"));
 30:   for (i = 0; i < 5; i++) PetscCall(PetscPrintf(PETSC_COMM_SELF, " %2" PetscInt_FMT "     %g\n", index2[i], (double)x2[i]));
 31:   PetscCall(PetscPrintf(PETSC_COMM_SELF, "---------------\n"));
 32:   PetscCall(PetscSortRealWithArrayInt(5, x2, index2));
 33:   for (i = 0; i < 5; i++) PetscCall(PetscPrintf(PETSC_COMM_SELF, " %2" PetscInt_FMT "     %g\n", index2[i], (double)x2[i]));

 35:   PetscCall(PetscPrintf(PETSC_COMM_SELF, "\n4th test\n"));
 36:   for (i = 0; i < 10; i++) PetscCall(PetscPrintf(PETSC_COMM_SELF, " %2" PetscInt_FMT "     %g\n", index3[i], (double)x3[i]));
 37:   PetscCall(PetscPrintf(PETSC_COMM_SELF, "---------------\n"));
 38:   PetscCall(PetscSortRealWithArrayInt(10, x3, index3));
 39:   for (i = 0; i < 10; i++) PetscCall(PetscPrintf(PETSC_COMM_SELF, " %2" PetscInt_FMT "     %g\n", index3[i], (double)x3[i]));

 41:   PetscCall(PetscPrintf(PETSC_COMM_SELF, "\n5th test\n"));
 42:   val = 44;
 43:   PetscCall(PetscFindReal(val, 10, x3, PETSC_SMALL, &loc));
 44:   PetscCall(PetscPrintf(PETSC_COMM_SELF, " %g in array: loc %" PetscInt_FMT "\n", (double)val, loc));
 45:   val = 309.2;
 46:   PetscCall(PetscFindReal(val, 10, x3, PETSC_SMALL, &loc));
 47:   PetscCall(PetscPrintf(PETSC_COMM_SELF, " %g in array: loc %" PetscInt_FMT "\n", (double)val, loc));
 48:   val = 309.2;
 49:   PetscCall(PetscFindReal(val, 10, x3, 0.21, &loc));
 50:   PetscCall(PetscPrintf(PETSC_COMM_SELF, " %g in array: loc %" PetscInt_FMT "\n", (double)val, loc));

 52:   PetscCall(PetscFinalize());
 53:   return 0;
 54: }

 56: /*TEST

 58:    test:

 60: TEST*/