1 /// @file 2 /// Test CeedVectorSetArray to remove array access 3 /// \test Test CeedVectorSetArray to remove array access 4 #include <ceed.h> 5 #include <math.h> 6 7 int main(int argc, char **argv) { 8 Ceed ceed; 9 CeedVector x; 10 const CeedInt n = 10; 11 CeedScalar a[n]; 12 CeedScalar *b, *c; 13 const CeedScalar *d; 14 15 CeedInit(argv[1], &ceed); 16 17 CeedVectorCreate(ceed, n, &x); 18 for (CeedInt i = 0; i < n; i++) a[i] = 0; 19 a[3] = -3.14; 20 CeedVectorSetArray(x, CEED_MEM_HOST, CEED_USE_POINTER, a); 21 22 // Taking array should return a 23 CeedVectorTakeArray(x, CEED_MEM_HOST, &c); 24 if (fabs(c[3] + 3.14) > 10. * CEED_EPSILON) printf("Error taking array c[3] = %f\n", (CeedScalar)c[3]); 25 26 // Getting array should not modify a 27 CeedVectorGetArrayWrite(x, CEED_MEM_HOST, &b); 28 b[5] = -3.14; 29 CeedVectorRestoreArray(x, &b); 30 31 if (fabs(a[5] + 3.14) < 10. * CEED_EPSILON) printf("Error protecting array a[3] = %f\n", (CeedScalar)a[3]); 32 33 // Note: We do not need to free c because c == a was stack allocated. 34 CeedVectorDestroy(&x); 35 36 // Test with a size zero vector 37 CeedVectorCreate(ceed, 0, &x); 38 CeedVectorSetArray(x, CEED_MEM_HOST, CEED_USE_POINTER, NULL); 39 CeedVectorGetArrayRead(x, CEED_MEM_HOST, &d); 40 if (b) printf("CeedVectorGetArrayRead returned non-NULL for zero-sized Vector\n"); 41 CeedVectorRestoreArrayRead(x, &d); 42 CeedVectorTakeArray(x, CEED_MEM_HOST, &c); 43 if (c) printf("CeedVectorTakeArray returned non-NULL for zero-sized Vector\n"); 44 CeedVectorDestroy(&x); 45 46 CeedDestroy(&ceed); 47 return 0; 48 } 49