1 #include <petscfv.h> 2 3 static char help[] = "Test memory allocation of PetscFV arrays used in PetscFVComputeGradient"; 4 5 int main(int argc, char **argv) 6 { 7 PetscFV fvm; 8 PetscInt dim, numFaces; 9 PetscScalar *dx, *grad; 10 11 PetscFunctionBeginUser; 12 PetscCall(PetscInitialize(&argc, &argv, PETSC_NULL, help)); 13 14 /* 15 Working with a 2D mesh, made of triangles, and using the 2nd neighborhood 16 to reconstruct the cell gradient with a least square method, we use numFaces = 9 17 The array dx is not initialised, but it doesn't matter here 18 */ 19 dim = 2; 20 numFaces = 9; 21 PetscCall(PetscMalloc2(dim * numFaces, &dx, dim * numFaces, &grad)); 22 PetscCall(PetscFVCreate(PETSC_COMM_WORLD, &fvm)); 23 PetscCall(PetscFVSetType(fvm, PETSCFVLEASTSQUARES)); 24 PetscCall(PetscFVLeastSquaresSetMaxFaces(fvm, numFaces)); 25 26 /* Issue here */ 27 PetscCall(PetscFVComputeGradient(fvm, numFaces, dx, grad)); 28 29 PetscCall(PetscFVDestroy(&fvm)); 30 PetscCall(PetscFree2(dx, grad)); 31 PetscCall(PetscFinalize()); 32 PetscFunctionReturn(0); 33 } 34 35 /*TEST 36 test: 37 suffix: 1 38 TEST*/ 39