/* nag_zger (f16smc) Example Program. * * Copyright 2005 Numerical Algorithms Group. * * Mark 8, 2005. */ #include #include #include #include #include int main(int argc, char *argv[]) { FILE *fpin, *fpout; char *outfile = 0; /* Scalars */ Complex alpha, beta; Integer exit_status, i, incx, incy, j, m, n, pda, xlen, ylen; /* Arrays */ Complex *a = 0, *x = 0, *y = 0; /* Nag Types */ NagError fail; Nag_OrderType order; Nag_ConjType conj; #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; conj = Nag_NoConj; INIT_FAIL(fail); /* Check for command-line IO options */ fpin = nag_example_file_io(argc, argv, "-data", NULL); fpout = nag_example_file_io(argc, argv, "-results", NULL); (void) nag_example_file_io(argc, argv, "-nag_write", &outfile); fprintf(fpout, "nag_zger (f16smc) Example Program Results\n\n"); /* Skip heading in data file */ fscanf(fpin, "%*[^\n] "); /* Read the problem dimensions */ fscanf(fpin, "%ld%ld%*[^\n] ", &m, &n); /* Read scalar parameters */ fscanf(fpin, " ( %lf , %lf )%*[^\n] ", &alpha.re, &alpha.im); fscanf(fpin, " ( %lf , %lf )%*[^\n] ", &beta.re, &beta.im); /* Read increment parameters */ fscanf(fpin, "%ld%ld%*[^\n] ", &incx, &incy); #ifdef NAG_COLUMN_MAJOR pda = m; #else pda = n; #endif xlen = MAX(1, 1 + (m - 1)*ABS(incx)); ylen = MAX(1, 1 + (n - 1)*ABS(incy)); if (m > 0 && n > 0) { /* Allocate memory */ if (!(a = NAG_ALLOC(m*n, Complex)) || !(x = NAG_ALLOC(xlen, Complex)) || !(y = NAG_ALLOC(ylen, Complex))) { fprintf(fpout, "Allocation failure\n"); exit_status = -1; goto END; } } else { fprintf(fpout, "Invalid m or n\n"); exit_status = 1; return exit_status; } /* Input matrix A and vectors x and y */ for (i = 1; i <= m; ++i) { for (j = 1; j <= n; ++j) fscanf(fpin, " ( %lf , %lf )", &A(i, j).re, &A(i, j).im); fscanf(fpin, "%*[^\n] "); } for (i = 0; i < xlen; ++i) fscanf(fpin, " ( %lf , %lf )%*[^\n] ", &x[i].re, &x[i].im); for (i = 0; i < ylen; ++i) fscanf(fpin, " ( %lf , %lf )%*[^\n] ", &y[i].re, &y[i].im); /* nag_zger(f16smc). * Rank one update of complex matrix. * */ nag_zger(order, conj, m, n, alpha, x, incx, y, incy, beta, a, pda, &fail); if (fail.code != NE_NOERROR) { fprintf(fpout, "Error from nag_zger.\n%s\n", fail.message); exit_status = 1; goto END; } /* Print updated matrix A */ /* nag_gen_complx_mat_print_comp (x04dbc). * Print complex general matrix (comprehensive) */ if (outfile) fclose(fpout); nag_gen_complx_mat_print_comp(order, Nag_GeneralMatrix, Nag_NonUnitDiag, m, n, a, pda, Nag_BracketForm, "%7.4f", "Updated Matrix A", Nag_IntegerLabels, 0, Nag_IntegerLabels, 0, 80, 0, outfile, &fail); if (outfile && !(fpout = fopen(outfile, "a"))) { exit_status = 2; goto END; } if (fail.code != NE_NOERROR) { fprintf(fpout, "Error from nag_gen_complx_mat_print_comp (x04dbc).\n%s" "\n", fail.message); exit_status = 1; goto END; } END: if (fpin != stdin) fclose(fpin); if (fpout != stdout) fclose(fpout); if (a) NAG_FREE(a); if (x) NAG_FREE(x); if (y) NAG_FREE(y); return exit_status; }