X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/8857f8eb568017bfe4a1f884c89d000eb64e9627..d34decd2b2b88240cf4ca68a2a5feb7bf36de6e7:/mp-io.c

diff --git a/mp-io.c b/mp-io.c
index 1592269..c510649 100644
--- a/mp-io.c
+++ b/mp-io.c
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: mp-io.c,v 1.2 1999/11/19 13:19:06 mdw Exp $
+ * $Id: mp-io.c,v 1.4 2000/06/17 11:45:09 mdw Exp $
  *
  * Loading and storing of multiprecision integers
  *
@@ -30,6 +30,14 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: mp-io.c,v $
+ * Revision 1.4  2000/06/17 11:45:09  mdw
+ * Major memory management overhaul.  Added arena support.  Use the secure
+ * arena for secret integers.  Replace and improve the MP management macros
+ * (e.g., replace MP_MODIFY by MP_DEST).
+ *
+ * Revision 1.3  1999/11/21 22:13:02  mdw
+ * Add mp version of MPX_BITS.
+ *
  * Revision 1.2  1999/11/19 13:19:06  mdw
  * Set flags on results correctly.
  *
@@ -61,6 +69,23 @@ size_t mp_octets(const mp *m)
   return (sz);
 }
 
+/* --- @mp_bits@ --- *
+ *
+ * Arguments:	@const mp *m@ = a multiprecision integer
+ *
+ * Returns:	The number of bits required to represent @m@.
+ *
+ * Use:		Calculates the external storage required for a multiprecision
+ *		integer.
+ */
+
+unsigned long mp_bits(const mp *m)
+{
+  unsigned long bits;
+  MPX_BITS(bits, m->v, m->vl);
+  return (bits);
+}
+
 /* --- @mp_loadl@ --- *
  *
  * Arguments:	@mp *d@ = destination
@@ -77,7 +102,7 @@ size_t mp_octets(const mp *m)
 
 mp *mp_loadl(mp *d, const void *pv, size_t sz)
 {
-  MP_MODIFY(d, MPW_RQ(sz));
+  MP_DEST(d, MPW_RQ(sz), MP_UNDEF);
   mpx_loadl(d->v, d->vl, pv, sz);
   d->f &= ~(MP_UNDEF | MP_NEG);
   mp_shrink(d);
@@ -122,7 +147,7 @@ void mp_storel(const mp *m, void *pv, size_t sz)
 
 mp *mp_loadb(mp *d, const void *pv, size_t sz)
 {
-  MP_MODIFY(d, MPW_RQ(sz));
+  MP_DEST(d, MPW_RQ(sz), MP_UNDEF);
   mpx_loadb(d->v, d->vl, pv, sz);
   d->f &= ~(MP_UNDEF | MP_NEG);
   mp_shrink(d);