X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/10607a708e616a3c911e2b07d412d1b1895845b2..70b904c575877c683e6c79cac4fbf7c6d89d0bde:/mpint.c

diff --git a/mpint.c b/mpint.c
new file mode 100644
index 0000000..de3ed8b
--- /dev/null
+++ b/mpint.c
@@ -0,0 +1,181 @@
+/* -*-c-*-
+ *
+ * $Id: mpint.c,v 1.1 1999/11/25 11:38:31 mdw Exp $
+ *
+ * Conversion between MPs and standard C integers
+ *
+ * (c) 1999 Straylight/Edgeware
+ */
+
+/*----- Licensing notice --------------------------------------------------* 
+ *
+ * This file is part of Catacomb.
+ *
+ * Catacomb is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ * 
+ * Catacomb is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Library General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Library General Public
+ * License along with Catacomb; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+/*----- Revision history --------------------------------------------------* 
+ *
+ * $Log: mpint.c,v $
+ * Revision 1.1  1999/11/25 11:38:31  mdw
+ * Support for conversions between MPs and C integers.
+ *
+ */
+
+/*----- Header files ------------------------------------------------------*/
+
+#include "mpint.h"
+
+/*----- Main code ---------------------------------------------------------*/
+
+/* --- Conversion from C integers --- */
+
+#define FROM(name, type)						\
+  mp *mp_from##name(mp *d, type i) {					\
+    MP_FROMINT(d, type, i);						\
+    return (d);								\
+  }
+
+FROM(short, short)
+FROM(ushort, unsigned short)
+FROM(int, int)
+FROM(uint, unsigned)
+FROM(long, long)
+FROM(ulong, unsigned long)
+
+#undef FROM
+
+/* --- Conversion to C integers --- */
+
+#define TO(name, type, max)						\
+  type mp_to##name(const mp *m)						\
+  {									\
+    type i;								\
+    MP_TOINT(m, type, max, i);						\
+    return (i);								\
+  }
+
+TO(short, short, SHRT_MAX)
+TO(ushort, unsigned short, USHRT_MAX)
+TO(int, int, INT_MAX)
+TO(uint, unsigned, UINT_MAX)
+TO(long, long, LONG_MAX)
+TO(ulong, unsigned long, ULONG_MAX)
+
+#undef TO
+
+/*----- Test rig ----------------------------------------------------------*/
+
+#ifdef TEST_RIG
+
+#include <mLib/testrig.h>
+
+static int fromuint(dstr *v)
+{
+  unsigned i = *(unsigned *)v[0].buf;
+  mp *m = *(mp **)v[1].buf;
+  mp *d = mp_fromuint(MP_NEW, i);
+  int ok = 1;
+
+  if (MP_CMP(d, !=, m)) {
+    fputs("\n*** fromint failed.\n", stderr);
+    fprintf(stderr, "i = %u", i);
+    fputs("\nexpect = ", stderr); mp_writefile(m, stderr, 10);
+    fputs("\nresult = ", stderr); mp_writefile(d, stderr, 10);
+    fputc('\n', stderr);
+    ok = 0;
+  }
+
+  mp_drop(m);
+  mp_drop(d);
+  return (ok);
+}
+
+static int fromint(dstr *v)
+{
+  int i = *(int *)v[0].buf;
+  mp *m = *(mp **)v[1].buf;
+  mp *d = mp_fromint(MP_NEW, i);
+  int ok = 1;
+
+  if (MP_CMP(d, !=, m)) {
+    fputs("\n*** fromint failed.\n", stderr);
+    fprintf(stderr, "i = %i", i);
+    fputs("\nexpect = ", stderr); mp_writefile(m, stderr, 10);
+    fputs("\nresult = ", stderr); mp_writefile(d, stderr, 10);
+    fputc('\n', stderr);
+    ok = 0;
+  }
+
+  mp_drop(m);
+  mp_drop(d);
+  return (ok);
+}
+
+static int touint(dstr *v)
+{
+  mp *m = *(mp **)v[0].buf;
+  unsigned i = *(unsigned *)v[1].buf;
+  unsigned j = mp_touint(m);
+  int ok = 1;
+
+  if (i != j) {
+    fputs("\n*** touint failed.\n", stderr);
+    fputs("m = ", stderr); mp_writefile(m, stderr, 10);
+    fprintf(stderr, "\nexpect = %u; result = %u\n", i, j);
+    ok = 0;
+  }
+
+  mp_drop(m);
+  return (ok);
+}
+
+static int toint(dstr *v)
+{
+  mp *m = *(mp **)v[0].buf;
+  int i = *(int *)v[1].buf;
+  int j = mp_toint(m);
+  int ok = 1;
+
+  if (i != j) {
+    fputs("\n*** toint failed.\n", stderr);
+    fputs("m = ", stderr); mp_writefile(m, stderr, 10);
+    fprintf(stderr, "\nexpect = %i; result = %i\n", i, j);
+    ok = 0;
+  }
+
+  mp_drop(m);
+  return (ok);
+}
+
+static test_chunk tests[] = {
+  { "fromuint", fromuint, { &type_int, &type_mp, 0 } },
+  { "fromint", fromint, { &type_int, &type_mp, 0 } },
+  { "touint", touint, { &type_mp, &type_int, 0 } },
+  { "toint", toint, { &type_mp, &type_int, 0 } },
+  { 0, 0, { 0 } }
+};
+
+int main(int argc, char *argv[])
+{
+  sub_init();
+  test_run(argc, argv, tests, SRCDIR "/tests/mpint");
+  return (0);
+}
+
+#endif
+
+/*----- That's all, folks -------------------------------------------------*/