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 len = 10; 11 CeedScalar array[len]; 12 13 CeedInit(argv[1], &ceed); 14 15 CeedVectorCreate(ceed, len, &x); 16 for (CeedInt i = 0; i < len; i++) array[i] = 0; 17 array[3] = -3.14; 18 CeedVectorSetArray(x, CEED_MEM_HOST, CEED_USE_POINTER, array); 19 20 // Taking array should return a 21 { 22 CeedScalar *array; 23 24 CeedVectorTakeArray(x, CEED_MEM_HOST, &array); 25 if (fabs(array[3] + 3.14) > 10. * CEED_EPSILON) printf("Error taking array, array[3] = %f\n", (CeedScalar)array[3]); 26 } 27 28 // Getting array should not modify a 29 { 30 CeedScalar *writable_array; 31 32 CeedVectorGetArrayWrite(x, CEED_MEM_HOST, &writable_array); 33 writable_array[5] = -3.14; 34 CeedVectorRestoreArray(x, &writable_array); 35 } 36 if (fabs(array[5] + 3.14) < 10. * CEED_EPSILON) printf("Error protecting array, array[3] = %f\n", (CeedScalar)array[3]); 37 38 CeedVectorDestroy(&x); 39 40 // Test with a size zero vector 41 CeedVectorCreate(ceed, 0, &x); 42 CeedVectorSetArray(x, CEED_MEM_HOST, CEED_USE_POINTER, NULL); 43 { 44 const CeedScalar *read_array; 45 46 CeedVectorGetArrayRead(x, CEED_MEM_HOST, &read_array); 47 if (read_array) printf("CeedVectorGetArrayRead returned non-NULL for zero-sized Vector\n"); 48 CeedVectorRestoreArrayRead(x, &read_array); 49 } 50 { 51 CeedScalar *array; 52 53 CeedVectorTakeArray(x, CEED_MEM_HOST, &array); 54 if (array) printf("CeedVectorTakeArray returned non-NULL for zero-sized Vector\n"); 55 } 56 CeedVectorDestroy(&x); 57 58 CeedDestroy(&ceed); 59 return 0; 60 } 61