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

   1 /* -*-c-*-
   2  *
   3  * $Id: mpint.c,v 1.4 2004/04/08 01:36:15 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 /*----- Header files ------------------------------------------------------*/
  31
  32 #include "mpint.h"
  33
  34 /*----- Main code ---------------------------------------------------------*/
  35
  36 /* --- Conversion from C integers --- */
  37
  38 #define FROM(name, type)                                                \
  39   mp *mp_from##name(mp *d, type i) {                                    \
  40     MP_FROMINT(d, type, i);                                             \
  41     return (d);                                                         \
  42   }
  43
  44 FROM(short, short)
  45 FROM(ushort, unsigned short)
  46 FROM(int, int)
  47 FROM(uint, unsigned)
  48 FROM(uint32, uint32)
  49 FROM(long, long)
  50 FROM(ulong, unsigned long)
  51
  52 #undef FROM
  53
  54 /* --- Conversion to C integers --- */
  55
  56 #define TO(name, type, max)                                             \
  57   type mp_to##name(const mp *m)                                         \
  58   {                                                                     \
  59     type i;                                                             \
  60     MP_TOINT(m, type, max, i);                                          \
  61     return (i);                                                         \
  62   }
  63
  64 TO(short, short, SHRT_MAX)
  65 TO(ushort, unsigned short, USHRT_MAX)
  66 TO(int, int, INT_MAX)
  67 TO(uint, unsigned, UINT_MAX)
  68 TO(uint32, uint32, 0xffffffff)
  69 TO(long, long, LONG_MAX)
  70 TO(ulong, unsigned long, ULONG_MAX)
  71
  72 #undef TO
  73
  74 /*----- Test rig ----------------------------------------------------------*/
  75
  76 #ifdef TEST_RIG
  77
  78 #include <mLib/testrig.h>
  79
  80 static int fromuint(dstr *v)
  81 {
  82   unsigned long i = *(unsigned long *)v[0].buf;
  83   mp *m = *(mp **)v[1].buf;
  84   mp *d = mp_fromuint(MP_NEW, i);
  85   int ok = 1;
  86
  87   if (!MP_EQ(d, m)) {
  88     fputs("\n*** fromint failed.\n", stderr);
  89     fprintf(stderr, "i = %lu", i);
  90     fputs("\nexpect = ", stderr); mp_writefile(m, stderr, 10);
  91     fputs("\nresult = ", stderr); mp_writefile(d, stderr, 10);
  92     fputc('\n', stderr);
  93     ok = 0;
  94   }
  95
  96   mp_drop(m);
  97   mp_drop(d);
  98   assert(mparena_count(MPARENA_GLOBAL) == 0);
  99   return (ok);
 100 }
 101
 102 static int fromint(dstr *v)
 103 {
 104   long i = *(long *)v[0].buf;
 105   mp *m = *(mp **)v[1].buf;
 106   mp *d = mp_fromint(MP_NEW, i);
 107   int ok = 1;
 108
 109   if (!MP_EQ(d, m)) {
 110     fputs("\n*** fromint failed.\n", stderr);
 111     fprintf(stderr, "i = %li", i);
 112     fputs("\nexpect = ", stderr); mp_writefile(m, stderr, 10);
 113     fputs("\nresult = ", stderr); mp_writefile(d, stderr, 10);
 114     fputc('\n', stderr);
 115     ok = 0;
 116   }
 117
 118   mp_drop(m);
 119   mp_drop(d);
 120   assert(mparena_count(MPARENA_GLOBAL) == 0);
 121   return (ok);
 122 }
 123
 124 static int touint(dstr *v)
 125 {
 126   mp *m = *(mp **)v[0].buf;
 127   unsigned long i = *(unsigned long *)v[1].buf;
 128   unsigned j = mp_touint(m);
 129   int ok = 1;
 130
 131   if (i != j) {
 132     fputs("\n*** touint failed.\n", stderr);
 133     fputs("m = ", stderr); mp_writefile(m, stderr, 10);
 134     fprintf(stderr, "\nexpect = %lu; result = %u\n", i, j);
 135     ok = 0;
 136   }
 137
 138   mp_drop(m);
 139   assert(mparena_count(MPARENA_GLOBAL) == 0);
 140   return (ok);
 141 }
 142
 143 static int toint(dstr *v)
 144 {
 145   mp *m = *(mp **)v[0].buf;
 146   long i = *(long *)v[1].buf;
 147   int j = mp_toint(m);
 148   int ok = 1;
 149
 150   if (i != j) {
 151     fputs("\n*** toint failed.\n", stderr);
 152     fputs("m = ", stderr); mp_writefile(m, stderr, 10);
 153     fprintf(stderr, "\nexpect = %li; result = %i\n", i, j);
 154     ok = 0;
 155   }
 156
 157   mp_drop(m);
 158   assert(mparena_count(MPARENA_GLOBAL) == 0);
 159   return (ok);
 160 }
 161
 162 static test_chunk tests[] = {
 163   { "fromuint", fromuint, { &type_ulong, &type_mp, 0 } },
 164   { "fromint", fromint, { &type_long, &type_mp, 0 } },
 165   { "touint", touint, { &type_mp, &type_ulong, 0 } },
 166   { "toint", toint, { &type_mp, &type_long, 0 } },
 167   { 0, 0, { 0 } }
 168 };
 169
 170 int main(int argc, char *argv[])
 171 {
 172   sub_init();
 173   test_run(argc, argv, tests, SRCDIR "/tests/mpint");
 174   return (0);
 175 }
 176
 177 #endif
 178
 179 /*----- That's all, folks -------------------------------------------------*/