/* nag_matop_complex_gen_matrix_exp (f01fcc) Example Program. * * Copyright 2011, Numerical Algorithms Group. * * Mark 23, 2011. */ #include #include #include #include #include int main(void) { /* Scalars */ Integer exit_status = 0; Integer pda; Integer i, j, n; /* Arrays */ Complex *a = 0; /* NAG types */ Nag_OrderType order; NagError fail; INIT_FAIL(fail); printf("nag_matop_complex_gen_matrix_exp (f01fcc) Example Program Results"); printf("\n\n"); /* Read matrix dimension from data file. */ scanf("%*[^\n]%ld%*[^\n]", &n); pda = n; if (!(a = NAG_ALLOC((pda)*(n), Complex))) { printf("Allocation failure\n"); exit_status = -1; goto END; } #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 /* Read A from data file. */ for (i = 1; i <= n; i++) for (j = 1; j <= n; j++) scanf(" ( %lf , %lf ) ", &A(i, j).re, &A(i, j).im); scanf("%*[^\n]"); /* nag_matop_complex_gen_matrix_exp (f01fcc) - Complex matrix exponential */ nag_matop_complex_gen_matrix_exp(order, n, a, pda, &fail); if (fail.code != NE_NOERROR) { printf("%s\n", fail.message); exit_status = 1; goto END; } /* nag_gen_complx_mat_print(x04dac) - Print complex general matrix */ nag_gen_complx_mat_print(order, Nag_GeneralMatrix, Nag_NonUnitDiag, n, n, a, n, "Exp(A)", NULL, &fail); if (fail.code != NE_NOERROR) { printf("%s\n", fail.message); exit_status = 2; goto END; } END: if (a) NAG_FREE(a); return exit_status; }