From 9a05e1fd41854d250bca5a66d61ca1d1cf05faab Mon Sep 17 00:00:00 2001
From: Dave Belanger <dave.belanger@cimmetry.com>
Date: Thu, 8 Apr 2004 19:48:19 +0000
Subject: [PATCH] wcstod: added exponent parsing and fixed handling of negative
 sign.

---
 dlls/msvcrt/wcs.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/dlls/msvcrt/wcs.c b/dlls/msvcrt/wcs.c
index 3ea853c32ed..3698ec4c5f2 100644
--- a/dlls/msvcrt/wcs.c
+++ b/dlls/msvcrt/wcs.c
@@ -20,6 +20,7 @@
  */
 #include <limits.h>
 #include <stdio.h>
+#include <math.h>
 #include "msvcrt.h"
 #include "winnls.h"
 #include "wine/unicode.h"
@@ -150,6 +151,32 @@ double MSVCRT_wcstod(const MSVCRT_wchar_t* lpszStr, MSVCRT_wchar_t** end)
     str++;
   }
 
+  if (*str == 'E' || *str == 'e' || *str == 'D' || *str == 'd')
+  {
+    int negativeExponent = 0;
+    int exponent = 0;
+    if (*(++str) == '-')
+    {
+      negativeExponent = 1;
+      str++;
+    }
+    while (isdigitW(*str))
+    {
+      exponent = exponent * 10 + (*str - '0');
+      str++;
+    }
+    if (exponent != 0)
+    {
+      if (negativeExponent)
+        ret = ret / pow(10.0, exponent);
+      else
+        ret = ret * pow(10.0, exponent);
+    }
+  }
+
+  if (negative)
+    ret = -ret;
+
   if (end)
     *end = (MSVCRT_wchar_t*)str;