1547d9b97Sjeremylt /// @file 2547d9b97Sjeremylt /// Test vector norms 3547d9b97Sjeremylt /// \test Test vector norms 4547d9b97Sjeremylt #include <ceed.h> 5547d9b97Sjeremylt #include <math.h> 6547d9b97Sjeremylt 7547d9b97Sjeremylt int main(int argc, char **argv) { 8547d9b97Sjeremylt Ceed ceed; 9547d9b97Sjeremylt CeedVector x; 10547d9b97Sjeremylt CeedInt n = 10; 11547d9b97Sjeremylt CeedScalar a[10]; 12547d9b97Sjeremylt 13547d9b97Sjeremylt CeedInit(argv[1], &ceed); 14547d9b97Sjeremylt 15547d9b97Sjeremylt CeedVectorCreate(ceed, n, &x); 16*2b730f8bSJeremy L Thompson for (CeedInt i = 0; i < n; i++) a[i] = i * (i % 2 ? 1 : -1); 17547d9b97Sjeremylt CeedVectorSetArray(x, CEED_MEM_HOST, CEED_USE_POINTER, a); 1816e0f512Sjeremylt { 1916e0f512Sjeremylt // Sync memtype to device for GPU backends 2016e0f512Sjeremylt CeedMemType type = CEED_MEM_HOST; 2116e0f512Sjeremylt CeedGetPreferredMemType(ceed, &type); 2216e0f512Sjeremylt CeedVectorSyncArray(x, type); 2316e0f512Sjeremylt } 24547d9b97Sjeremylt 25547d9b97Sjeremylt CeedScalar norm; 26547d9b97Sjeremylt CeedVectorNorm(x, CEED_NORM_1, &norm); 27*2b730f8bSJeremy L Thompson if (fabs(norm - 45.) > 100. * CEED_EPSILON) printf("Error: L1 norm %f != 45.\n", norm); 28547d9b97Sjeremylt 29547d9b97Sjeremylt CeedVectorNorm(x, CEED_NORM_2, &norm); 30*2b730f8bSJeremy L Thompson if (fabs(norm - sqrt(285.)) > 100. * CEED_EPSILON) printf("Error: L2 norm %f != sqrt(285.)\n", norm); 31547d9b97Sjeremylt 32547d9b97Sjeremylt CeedVectorNorm(x, CEED_NORM_MAX, &norm); 33*2b730f8bSJeremy L Thompson if (fabs(norm - 9.) > 100. * CEED_EPSILON) printf("Error: Max norm %f != 9.\n", norm); 34547d9b97Sjeremylt 35547d9b97Sjeremylt CeedVectorDestroy(&x); 36547d9b97Sjeremylt CeedDestroy(&ceed); 37547d9b97Sjeremylt return 0; 38547d9b97Sjeremylt } 39