merge of '5fdf69ca60d1683cdd9f4c2595134bed26394834'

     and '6b61c50f4cf888bea302ac8fcf5dbb573b443251'

--HG--
extra : convert_revision : b1dd3b94e60a07a176dba2b035ac79968595990a

1 files changed, 48 insertions, 0 deletions

diff --git a/libtommath/bn_mp_init_size.c b/libtommath/bn_mp_init_size.c
new file mode 100644
index 0000000..4aebd1f
--- /dev/null
+++ b/libtommath/bn_mp_init_size.c
@@ -0,0 +1,48 @@
+#include <tommath.h>
+#ifdef BN_MP_INIT_SIZE_C
+/* LibTomMath, multiple-precision integer library -- Tom St Denis
+ *
+ * LibTomMath is a library that provides multiple-precision
+ * integer arithmetic as well as number theoretic functionality.
+ *
+ * The library was designed directly after the MPI library by
+ * Michael Fromberger but has been written from scratch with
+ * additional optimizations in place.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com
+ */
+
+/* init an mp_init for a given size */
+int mp_init_size (mp_int * a, int size)
+{
+  int x;
+
+  /* pad size so there are always extra digits */
+  size += (MP_PREC * 2) - (size % MP_PREC);	
+  
+  /* alloc mem */
+  a->dp = OPT_CAST(mp_digit) XMALLOC (sizeof (mp_digit) * size);
+  if (a->dp == NULL) {
+    return MP_MEM;
+  }
+
+  /* set the members */
+  a->used  = 0;
+  a->alloc = size;
+  a->sign  = MP_ZPOS;
+
+  /* zero the digits */
+  for (x = 0; x < size; x++) {
+      a->dp[x] = 0;
+  }
+
+  return MP_OKAY;
+}
+#endif
+
+/* $Source: /cvs/libtom/libtommath/bn_mp_init_size.c,v $ */
+/* $Revision: 1.3 $ */
+/* $Date: 2006/03/31 14:18:44 $ */