X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/b9b786f596f8c55b91b94ff3b07420e4da36b183..34e4f738bcba58e6d8c4cabbb0b3232a65b42a9d:/mptext-string.c

diff --git a/mptext-string.c b/mptext-string.c
index d5b7248..bdd6230 100644
--- a/mptext-string.c
+++ b/mptext-string.c
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: mptext-string.c,v 1.2 1999/12/22 15:56:21 mdw Exp $
+ * $Id: mptext-string.c,v 1.4 2004/04/01 12:50:09 mdw Exp $
  *
  * Reading and writing large integers on strings
  *
@@ -30,6 +30,16 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: mptext-string.c,v $
+ * Revision 1.4  2004/04/01 12:50:09  mdw
+ * Add cyclic group abstraction, with test code.  Separate off exponentation
+ * functions for better static linking.  Fix a buttload of bugs on the way.
+ * Generally ensure that negative exponents do inversion correctly.  Add
+ * table of standard prime-field subgroups.  (Binary field subgroups are
+ * currently unimplemented but easy to add if anyone ever finds a good one.)
+ *
+ * Revision 1.3  2000/08/04 23:23:44  mdw
+ * Various <ctype.h> fixes.
+ *
  * Revision 1.2  1999/12/22 15:56:21  mdw
  * Make the buffer passed to `put' op constant.
  *
@@ -53,7 +63,7 @@ static int get(void *p)
   mptext_stringctx *c = p;
   if (c->buf >= c->lim)
     return (EOF);
-  return (*c->buf++);
+  return ((unsigned char)*c->buf++);
 }
 
 static void unget(int ch, void *p)
@@ -85,7 +95,7 @@ const mptext_ops mptext_stringops = { get, unget, put };
 mp *mp_readstring(mp *m, const char *p, char **end, int radix)
 {
   mptext_stringctx c;
-  c.buf = (char *)p;
+  c.buf = (/*unconst */ char *)p;
   c.lim = c.buf + strlen(p);
   m = mp_read(m, radix, &mptext_stringops, &c);
   if (end)