1 /// @file 2 /// Test vector norms 3 /// \test Test vector norms 4 #include <ceed.h> 5 #include <math.h> 6 7 int main(int argc, char **argv) { 8 Ceed ceed; 9 CeedVector x; 10 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] = i * (i % 2 ? 1 : -1); 17 CeedVectorSetArray(x, CEED_MEM_HOST, CEED_USE_POINTER, array); 18 { 19 // Sync memtype to device for GPU backends 20 CeedMemType type = CEED_MEM_HOST; 21 CeedGetPreferredMemType(ceed, &type); 22 CeedVectorSyncArray(x, type); 23 } 24 25 CeedScalar norm; 26 CeedVectorNorm(x, CEED_NORM_1, &norm); 27 if (fabs(norm - 45.) > 100. * CEED_EPSILON) printf("Error: L1 norm %f != 45.\n", norm); 28 29 CeedVectorNorm(x, CEED_NORM_2, &norm); 30 if (fabs(norm - sqrt(285.)) > 100. * CEED_EPSILON) printf("Error: L2 norm %f != sqrt(285.)\n", norm); 31 32 CeedVectorNorm(x, CEED_NORM_MAX, &norm); 33 if (fabs(norm - 9.) > 100. * CEED_EPSILON) printf("Error: Max norm %f != 9.\n", norm); 34 35 CeedVectorDestroy(&x); 36 CeedDestroy(&ceed); 37 return 0; 38 } 39