/* nag_dge_load (f16qhc) Example Program. * * Copyright 2005 Numerical Algorithms Group. * * Mark 8, 2005. */ #include #include #include #include #include int main(void) { /* Scalars */ double alpha, diag; Integer exit_status, m, n, pda; /* Arrays */ double *a = 0; /* Nag Types */ Nag_OrderType order; NagError fail; #ifdef NAG_COLUMN_MAJOR #define A(I, J) a[(J-1)*pda + I - 1] order = Nag_ColMajor; #else #define A(I, J) a[(I-1)*pda + J - 1] order = Nag_RowMajor; #endif exit_status = 0; INIT_FAIL(fail); printf("nag_dge_load (f16qhc) Example Program Results\n\n"); /* Skip heading in data file */ scanf("%*[^\n] "); /* Read the problem dimensions */ scanf("%ld%ld%*[^\n] ", &m, &n); /* Read scalar parameters */ scanf("%lf%lf%*[^\n] ", &alpha, &diag); if (order == Nag_ColMajor) pda = m; else pda = n; if (m > 0 && n > 0) { /* Allocate memory */ if (!(a = NAG_ALLOC(m*n, double))) { printf("Allocation failure\n"); exit_status = -1; goto END; } } else { printf("Invalid m or n\n"); exit_status = 1; return exit_status; } /* nag_dge_load(f16qhc). * General matrix initialisation. * */ nag_dge_load(order, m, n, alpha, diag, a, pda, &fail); if (fail.code != NE_NOERROR) { printf("Error from nag_dge_load (f16qhc).\n%s\n", fail.message); exit_status = 1; goto END; } /* Print output */ /* nag_gen_real_mat_print (x04cac). * Print real general matrix (easy-to-use) */ fflush(stdout); nag_gen_real_mat_print(order, Nag_GeneralMatrix, Nag_NonUnitDiag, m, n, a, pda, "Matrix A", 0, &fail); if (fail.code != NE_NOERROR) { printf("Error from nag_gen_real_mat_print (x04cac).\n%s\n", fail.message); exit_status = 1; goto END; } END: if (a) NAG_FREE(a); return exit_status; }