nsz Git - libfirm/blob - ir/lpp/mps.c

   1 /**
   2  * Author:      Daniel Grund
   3  * Date:        02.06.2005
   4  * Copyright:   (c) Universitaet Karlsruhe
   5  * Licence:     This file protected by GPL -  GNU GENERAL PUBLIC LICENSE.
   6  */
   7 #include "config.h"
   8 #include <stdarg.h>
   9 #include <assert.h>
  10 #include "mps.h"
  11
  12 /**
  13  * These must comply to the enum cst_t in lpp.h
  14  */
  15 static const char *mps_cst_encoding[4] = {"N", "E", "L", "G"};
  16
  17 /**
  18  * Diffferent line styles which can be used in a mps file
  19  */
  20 typedef enum {
  21         l_raw, l_ind_name, l_ind_objs, l_ind_rows, l_ind_cols, l_ind_rhs, l_ind_end,
  22         l_data_row, l_data_col1, l_data_col2, l_data_mst, l_marker
  23 } mps_line_t;
  24
  25 static void mps_write_line(FILE *out, lpp_mps_style_t style,
  26                            mps_line_t line_type, ...)
  27 {
  28         va_list args;
  29         const char *fmt = "";
  30
  31         assert(style == s_mps_fixed || style == s_mps_free);
  32         va_start(args, line_type);
  33
  34         if (style == s_mps_fixed) {
  35                 /* white spaces are important! */
  36                 switch (line_type) {
  37                         case l_raw:       fmt = "%s\n"; break;
  38                         case l_ind_name:  fmt = "NAME          %s\n"; break;
  39                         case l_ind_objs:  fmt = "OBJSENSE\n"; break;
  40                         case l_ind_rows:  fmt = "ROWS\n"; break;
  41                         case l_ind_cols:  fmt = "COLUMNS\n"; break;
  42                         case l_ind_rhs:   fmt = "RHS\n"; break;
  43                         case l_ind_end:   fmt = "ENDATA\n"; break;
  44                         case l_data_row:  fmt = " %-2s %-8s\n"; break; /* Field 1-2 */
  45                         case l_data_col1: fmt = "    %-8s  %-8s  %12g\n"; break; /* Field 2-4 */
  46                         case l_data_col2: fmt = "    %-8s  %-8s  %12g   %-8s  %12g\n"; break; /* Field 2-6 */
  47                         case l_data_mst:  fmt = "    %-8s            %12g\n"; break; /* Field 3-4 */
  48                         case l_marker:    fmt = "    M%-7d  'MARKER'                 '%s'\n"; break; /* Field 2,3,5 */
  49                         default: assert(0);
  50                 }
  51         } else {
  52                 switch (line_type) {
  53                         case l_raw:       fmt = "%s\n"; break;
  54                         case l_ind_name:  fmt = "NAME %s\n"; break;
  55                         case l_ind_objs:  fmt = "OBJSENSE\n"; break;
  56                         case l_ind_rows:  fmt = "ROWS\n"; break;
  57                         case l_ind_cols:  fmt = "COLUMNS\n"; break;
  58                         case l_ind_rhs:   fmt = "RHS\n"; break;
  59                         case l_ind_end:   fmt = "ENDATA\n"; break;
  60                         case l_data_row:  fmt = " %s\t%s\n"; break;
  61                         case l_data_col1: fmt = " %s\t%s\t%g\n"; break;
  62                         case l_data_col2: fmt = " %s\t%s\t%g\t%s\t%g\n"; break;
  63                         case l_data_mst:  fmt = " %s\t%g\n"; break;
  64                         case l_marker:    fmt = " M%d\t'MARKER'\t'%s'\n"; break;
  65                         default: assert(0);
  66                 }
  67         }
  68
  69         vfprintf(out, fmt, args);
  70         va_end(args);
  71 }
  72
  73 static int mps_insert_markers(FILE *out, lpp_mps_style_t style, lpp_var_t curr,
  74                               lpp_var_t last, int marker_nr)
  75 {
  76         assert(style == s_mps_fixed || style == s_mps_free);
  77         if (last != curr) {
  78                 /* print end-marker for last */
  79                 if (last == lpp_binary)
  80                         mps_write_line(out, style, l_marker, marker_nr++, "INTEND");
  81
  82                 /* print begin-marker for curr */
  83                 if (curr == lpp_binary)
  84                         mps_write_line(out, style, l_marker, marker_nr++, "INTORG");
  85         }
  86         return marker_nr;
  87 }
  88
  89 void mps_write_mps(lpp_t *lpp, lpp_mps_style_t style, FILE *out)
  90 {
  91         int i, count, marker_nr = 0;
  92         const lpp_name_t *curr;
  93         const matrix_elem_t *elem, *before = NULL;
  94         lpp_var_t last_type;
  95         assert(style == s_mps_fixed || style == s_mps_free);
  96
  97         /* NAME */
  98         mps_write_line(out, style, l_ind_name, lpp->name);
  99
 100         /* OBJSENSE */
 101         if (lpp->opt_type == lpp_maximize) {
 102                 mps_write_line(out, style, l_ind_objs);
 103                 mps_write_line(out, style, l_raw, " MAX");
 104         }
 105
 106         /* ROWS */
 107         mps_write_line(out, style, l_ind_rows);
 108         for(i=0; i<lpp->cst_next; ++i) {
 109                 curr = lpp->csts[i];
 110                 mps_write_line(out, style, l_data_row, mps_cst_encoding[curr->type.cst_type], curr->name);
 111         }
 112
 113         /* COLUMNS */
 114         mps_write_line(out, style, l_ind_cols);
 115         last_type = lpp_invalid;
 116         for(i=1; i<lpp->var_next; ++i) { /* column 0 is rhs */
 117                 curr = lpp->vars[i];
 118
 119                 /* markers */
 120                 marker_nr = mps_insert_markers(out, style, curr->type.var_type, last_type, marker_nr);
 121                 last_type = curr->type.var_type;
 122
 123                 /* participation in constraints */
 124                 count = 0;
 125                 matrix_foreach_in_col(lpp->m, curr->nr, elem) {
 126                         if (count == 0) {
 127                                 before = elem;
 128                                 count = 1;
 129                         } else {
 130                                 mps_write_line(out, style, l_data_col2, curr->name, lpp->csts[before->row]->name, (double)before->val, lpp->csts[elem->row]->name, (double)elem->val);
 131                                 count = 0;
 132                         }
 133                 }
 134                 if (count == 1)
 135                         mps_write_line(out, style, l_data_col1, curr->name, lpp->csts[before->row]->name, (double)before->val);
 136         }
 137         mps_insert_markers(out, style, lpp_invalid, last_type, marker_nr); /* potential end-marker */
 138
 139         /* RHS */
 140         mps_write_line(out, style, l_ind_rhs);
 141         count = 0;
 142         matrix_foreach_in_col(lpp->m, 0, elem) {
 143                 if (count == 0) {
 144                         before = elem;
 145                         count = 1;
 146                 } else {
 147                         mps_write_line(out, style, l_data_col2, "rhs", lpp->csts[before->row]->name, (double)before->val, lpp->csts[elem->row]->name, (double)elem->val);
 148                         count = 0;
 149                 }
 150         }
 151         if (count == 1)
 152                 mps_write_line(out, style, l_data_col1, "rhs", lpp->csts[before->row]->name, (double)before->val);
 153
 154         /* ENDATA */
 155         mps_write_line(out, style, l_ind_end);
 156 }
 157
 158 void mps_write_mst(lpp_t *lpp, lpp_mps_style_t style, FILE *out)
 159 {
 160         int i;
 161         mps_write_line(out, style, l_ind_name, "");
 162         for (i=0; i<lpp->var_next; ++i) {
 163                 const lpp_name_t *var = lpp->vars[i];
 164                 if (var->value_kind == lpp_value_start)
 165                         mps_write_line(out, style, l_data_mst, var->name, (double)var->value);
 166         }
 167         mps_write_line(out, style, l_ind_end);
 168 }