git.distorted.org.uk Git - u/mdw/catacomb/blob - mpint.c

   1 /* -*-c-*-
   2  *
   3  * $Id: mpint.c,v 1.3 2000/10/08 12:11:22 mdw Exp $
   4  *
   5  * Conversion between MPs and standard C integers
   6  *
   7  * (c) 1999 Straylight/Edgeware
   8  */
   9
  10 /*----- Licensing notice --------------------------------------------------*
  11  *
  12  * This file is part of Catacomb.
  13  *
  14  * Catacomb is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU Library General Public License as
  16  * published by the Free Software Foundation; either version 2 of the
  17  * License, or (at your option) any later version.
  18  *
  19  * Catacomb is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU Library General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU Library General Public
  25  * License along with Catacomb; if not, write to the Free
  26  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  27  * MA 02111-1307, USA.
  28  */
  29
  30 /*----- Revision history --------------------------------------------------*
  31  *
  32  * $Log: mpint.c,v $
  33  * Revision 1.3  2000/10/08 12:11:22  mdw
  34  * Use @MP_EQ@ instead of @MP_CMP@.
  35  *
  36  * Revision 1.2  1999/12/10 23:22:53  mdw
  37  * Support for uint32.
  38  *
  39  * Revision 1.1  1999/11/25 11:38:31  mdw
  40  * Support for conversions between MPs and C integers.
  41  *
  42  */
  43
  44 /*----- Header files ------------------------------------------------------*/
  45
  46 #include "mpint.h"
  47
  48 /*----- Main code ---------------------------------------------------------*/
  49
  50 /* --- Conversion from C integers --- */
  51
  52 #define FROM(name, type)                                                \
  53   mp *mp_from##name(mp *d, type i) {                                    \
  54     MP_FROMINT(d, type, i);                                             \
  55     return (d);                                                         \
  56   }
  57
  58 FROM(short, short)
  59 FROM(ushort, unsigned short)
  60 FROM(int, int)
  61 FROM(uint, unsigned)
  62 FROM(uint32, uint32)
  63 FROM(long, long)
  64 FROM(ulong, unsigned long)
  65
  66 #undef FROM
  67
  68 /* --- Conversion to C integers --- */
  69
  70 #define TO(name, type, max)                                             \
  71   type mp_to##name(const mp *m)                                         \
  72   {                                                                     \
  73     type i;                                                             \
  74     MP_TOINT(m, type, max, i);                                          \
  75     return (i);                                                         \
  76   }
  77
  78 TO(short, short, SHRT_MAX)
  79 TO(ushort, unsigned short, USHRT_MAX)
  80 TO(int, int, INT_MAX)
  81 TO(uint, unsigned, UINT_MAX)
  82 TO(uint32, uint32, 0xffffffff)
  83 TO(long, long, LONG_MAX)
  84 TO(ulong, unsigned long, ULONG_MAX)
  85
  86 #undef TO
  87
  88 /*----- Test rig ----------------------------------------------------------*/
  89
  90 #ifdef TEST_RIG
  91
  92 #include <mLib/testrig.h>
  93
  94 static int fromuint(dstr *v)
  95 {
  96   unsigned long i = *(unsigned long *)v[0].buf;
  97   mp *m = *(mp **)v[1].buf;
  98   mp *d = mp_fromuint(MP_NEW, i);
  99   int ok = 1;
 100
 101   if (!MP_EQ(d, m)) {
 102     fputs("\n*** fromint failed.\n", stderr);
 103     fprintf(stderr, "i = %lu", i);
 104     fputs("\nexpect = ", stderr); mp_writefile(m, stderr, 10);
 105     fputs("\nresult = ", stderr); mp_writefile(d, stderr, 10);
 106     fputc('\n', stderr);
 107     ok = 0;
 108   }
 109
 110   mp_drop(m);
 111   mp_drop(d);
 112   assert(mparena_count(MPARENA_GLOBAL) == 0);
 113   return (ok);
 114 }
 115
 116 static int fromint(dstr *v)
 117 {
 118   long i = *(long *)v[0].buf;
 119   mp *m = *(mp **)v[1].buf;
 120   mp *d = mp_fromint(MP_NEW, i);
 121   int ok = 1;
 122
 123   if (!MP_EQ(d, m)) {
 124     fputs("\n*** fromint failed.\n", stderr);
 125     fprintf(stderr, "i = %li", i);
 126     fputs("\nexpect = ", stderr); mp_writefile(m, stderr, 10);
 127     fputs("\nresult = ", stderr); mp_writefile(d, stderr, 10);
 128     fputc('\n', stderr);
 129     ok = 0;
 130   }
 131
 132   mp_drop(m);
 133   mp_drop(d);
 134   assert(mparena_count(MPARENA_GLOBAL) == 0);
 135   return (ok);
 136 }
 137
 138 static int touint(dstr *v)
 139 {
 140   mp *m = *(mp **)v[0].buf;
 141   unsigned long i = *(unsigned long *)v[1].buf;
 142   unsigned j = mp_touint(m);
 143   int ok = 1;
 144
 145   if (i != j) {
 146     fputs("\n*** touint failed.\n", stderr);
 147     fputs("m = ", stderr); mp_writefile(m, stderr, 10);
 148     fprintf(stderr, "\nexpect = %lu; result = %u\n", i, j);
 149     ok = 0;
 150   }
 151
 152   mp_drop(m);
 153   assert(mparena_count(MPARENA_GLOBAL) == 0);
 154   return (ok);
 155 }
 156
 157 static int toint(dstr *v)
 158 {
 159   mp *m = *(mp **)v[0].buf;
 160   long i = *(long *)v[1].buf;
 161   int j = mp_toint(m);
 162   int ok = 1;
 163
 164   if (i != j) {
 165     fputs("\n*** toint failed.\n", stderr);
 166     fputs("m = ", stderr); mp_writefile(m, stderr, 10);
 167     fprintf(stderr, "\nexpect = %li; result = %i\n", i, j);
 168     ok = 0;
 169   }
 170
 171   mp_drop(m);
 172   assert(mparena_count(MPARENA_GLOBAL) == 0);
 173   return (ok);
 174 }
 175
 176 static test_chunk tests[] = {
 177   { "fromuint", fromuint, { &type_ulong, &type_mp, 0 } },
 178   { "fromint", fromint, { &type_long, &type_mp, 0 } },
 179   { "touint", touint, { &type_mp, &type_ulong, 0 } },
 180   { "toint", toint, { &type_mp, &type_long, 0 } },
 181   { 0, 0, { 0 } }
 182 };
 183
 184 int main(int argc, char *argv[])
 185 {
 186   sub_init();
 187   test_run(argc, argv, tests, SRCDIR "/tests/mpint");
 188   return (0);
 189 }
 190
 191 #endif
 192
 193 /*----- That's all, folks -------------------------------------------------*/