Fix small bug in 'divide' function.

diff --git a/lib/vasnprintf.c b/lib/vasnprintf.c
index fdca886..f67211b 100644 (file)
--- a/lib/vasnprintf.c
+++ b/lib/vasnprintf.c
@@ -623,19 +623,19 @@ divide (mpn_t a, mpn_t b, mpn_t *q)
     goto increment_q;
   {
     size_t i;
-    for (i = b_len; i > 0; )
+    for (i = b_len;;)
       {
+       mp_limb_t r_i =
+         (i <= r_len && i > 0 ? r_ptr[i - 1] >> (GMP_LIMB_BITS - 1) : 0)
+         | (i < r_len ? r_ptr[i] << 1 : 0);
+       mp_limb_t b_i = (i < b_len ? b_ptr[i] : 0);
+       if (r_i > b_i)
+         goto increment_q;
+       if (r_i < b_i)
+         goto keep_q;
+       if (i == 0)
+         break;
        i--;
-       {
-         mp_limb_t r_i =
-           (i + 1 < r_len ? r_ptr[i + 1] >> (GMP_LIMB_BITS - 1) : 0)
-           | (i < r_len ? r_ptr[i] << 1 : 0);
-         mp_limb_t b_i = b_ptr[i];
-         if (r_i > b_i)
-           goto increment_q;
-         if (r_i < b_i)
-           goto keep_q;
-       }
       }
   }
   if (q_len > 0 && ((q_ptr[0] & 1) != 0))