From 77cb61d2cfc58e4af70aa57b98b882056529e93b Mon Sep 17 00:00:00 2001
From: unknown <holyfoot@hf-ibm.(none)>
Date: Sat, 7 May 2005 14:41:00 +0500
Subject: [PATCH] Fix for bug #9527 (negative zero is a nonsence)

strings/decimal.c:
  added the check to make sure we don't ge -0.00
---
 strings/decimal.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/strings/decimal.c b/strings/decimal.c
index 7459b2f7dda..3fa06132cf1 100644
--- a/strings/decimal.c
+++ b/strings/decimal.c
@@ -1924,6 +1924,17 @@ int decimal_mul(decimal_t *from1, decimal_t *from2, decimal_t *to)
     for (; carry; buf0--)
       ADD(*buf0, *buf0, 0, carry);
   }
+
+  /* Now we have to check for -0.000 case */
+  if (to->sign)
+  {
+    dec1 *buf= to->buf;
+    dec1 *end= to->buf + intg0 + frac0;
+    for (; (buf<end) && !*buf; buf++);
+    if (buf == end)
+      /* So we got decimal zero */
+      decimal_make_zero(to);
+  }
   return error;
 }