nsz Git - libfirm/blob - ir/be/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
   8 #ifdef HAVE_CONFIG_H
   9 #include "config.h"
  10 #endif
  11 #include <stdarg.h>
  12 #include <assert.h>
  13 #include "mps.h"
  14
  15 /**
  16  * These must comply to the enum cst_t in lpp.h
  17  */
  18 static char *mps_cst_encoding[4] = {"N", "E", "L", "G"};
  19
  20 /**
  21  * Diffferent line styles which can be used in a mps file
  22  */
  23 typedef enum _mps_line_t {l_raw,
  24                                                   l_ind_name, l_ind_objs, l_ind_rows, l_ind_cols, l_ind_rhs, l_ind_end,
  25                                                   l_data_row, l_data_col1, l_data_col2, l_data_mst, l_marker} mps_line_t;
  26
  27 static void mps_write_line(FILE *out, style_t style, mps_line_t line_type, ...) {
  28         va_list args;
  29         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 INLINE int mps_insert_markers(FILE *out, style_t style, var_t curr, var_t last, int marker_nr) {
  74         assert(style == s_mps_fixed || style == s_mps_free);
  75         if (last != curr) {
  76                 /* print end-marker for last */
  77                 if (last == binary)
  78                         mps_write_line(out, style, l_marker, marker_nr++, "INTEND");
  79
  80                 /* print begin-marker for curr */
  81                 if (curr == binary)
  82                         mps_write_line(out, style, l_marker, marker_nr++, "INTORG");
  83         }
  84         return marker_nr;
  85 }
  86
  87 void mps_write_mps(lpp_t *lpp, style_t style, FILE *out) {
  88         int i, count, marker_nr = 0;
  89         const name_t *curr;
  90         const matrix_elem_t *elem, *before = NULL;
  91         var_t last_type;
  92         assert(style == s_mps_fixed || style == s_mps_free);
  93
  94         /* NAME */
  95         mps_write_line(out, style, l_ind_name, lpp->name);
  96
  97         /* OBJSENSE */
  98         if (lpp->opt_type == maximize) {
  99                 mps_write_line(out, style, l_ind_objs);
 100                 mps_write_line(out, style, l_raw, " MAX");
 101         }
 102
 103         /* ROWS */
 104         mps_write_line(out, style, l_ind_rows);
 105         for(i=0; i<lpp->cst_next; ++i) {
 106                 curr = lpp->csts[i];
 107                 mps_write_line(out, style, l_data_row, mps_cst_encoding[curr->type.cst_type], curr->name);
 108         }
 109
 110         /* COLUMNS */
 111         mps_write_line(out, style, l_ind_cols);
 112         last_type = invalid;
 113         for(i=1; i<lpp->var_next; ++i) { /* column 0 is rhs */
 114                 curr = lpp->vars[i];
 115
 116                 /* markers */
 117                 marker_nr = mps_insert_markers(out, style, curr->type.var_type, last_type, marker_nr);
 118                 last_type = curr->type.var_type;
 119
 120                 /* participation in constraints */
 121                 count = 0;
 122                 matrix_foreach_in_col(lpp->m, curr->nr, elem) {
 123                         if (count == 0) {
 124                                 before = elem;
 125                                 count = 1;
 126                         } else {
 127                                 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);
 128                                 count = 0;
 129                         }
 130                 }
 131                 if (count == 1)
 132                         mps_write_line(out, style, l_data_col1, curr->name, lpp->csts[before->row]->name, (double)before->val);
 133         }
 134         mps_insert_markers(out, style, invalid, last_type, marker_nr); /* potential end-marker */
 135
 136         /* RHS */
 137         mps_write_line(out, style, l_ind_rhs);
 138         count = 0;
 139         matrix_foreach_in_col(lpp->m, 0, elem) {
 140                 if (count == 0) {
 141                         before = elem;
 142                         count = 1;
 143                 } else {
 144                         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);
 145                         count = 0;
 146                 }
 147         }
 148         if (count == 1)
 149                 mps_write_line(out, style, l_data_col1, "rhs", lpp->csts[before->row]->name, (double)before->val);
 150
 151         /* ENDATA */
 152         mps_write_line(out, style, l_ind_end);
 153 }
 154
 155 void mps_write_mst(lpp_t *lpp, style_t style, FILE *out) {
 156         int i;
 157         mps_write_line(out, style, l_ind_name, "");
 158         for (i=0; i<lpp->var_next; ++i) {
 159                 const name_t *var = lpp->vars[i];
 160                 if (var->value_kind == value_start)
 161                         mps_write_line(out, style, l_data_mst, var->name, (double)var->value);
 162         }
 163         mps_write_line(out, style, l_ind_end);
 164 }