diff --git a/dlls/msvcp90/locale.c b/dlls/msvcp90/locale.c
index e41580770fc..1330d17e778 100644
--- a/dlls/msvcp90/locale.c
+++ b/dlls/msvcp90/locale.c
@@ -24,6 +24,7 @@
 #include "locale.h"
 #include "errno.h"
 #include "limits.h"
+#include "math.h"
 
 #include "wine/list.h"
 
@@ -3871,6 +3872,31 @@ basic_string_wchar* __thiscall numpunct_wchar_truename(const numpunct_wchar *thi
     return call_numpunct_wchar_do_truename(this, ret);
 }
 
+double __cdecl _Stod(const char *buf, char **buf_end, LONG exp)
+{
+    double ret = strtod(buf, buf_end);
+
+    if(exp)
+        ret *= pow(10, exp);
+    return ret;
+}
+
+double __cdecl _Stodx(const char *buf, char **buf_end, LONG exp, int *err)
+{
+    double ret;
+
+    *err = *_errno();
+    *_errno() = 0;
+    ret = _Stod(buf, buf_end, exp);
+    if(*_errno()) {
+        *err = *_errno();
+    }else {
+        *_errno() = *err;
+        *err = 0;
+    }
+    return ret;
+}
+
 /* ?id@?$num_get@_WV?$istreambuf_iterator@_WU?$char_traits@_W@std@@@std@@@std@@2V0locale@2@A */
 locale_id num_get_wchar_id = {0};
 /* ?id@?$num_get@GV?$istreambuf_iterator@GU?$char_traits@G@std@@@std@@@std@@2V0locale@2@A */
diff --git a/dlls/msvcp90/msvcp90.spec b/dlls/msvcp90/msvcp90.spec
index a5976e184d9..3d155183991 100644
--- a/dlls/msvcp90/msvcp90.spec
+++ b/dlls/msvcp90/msvcp90.spec
@@ -5783,12 +5783,12 @@
 # extern _Rteps
 @ stub _Sinh
 @ extern _Snan
-@ stub _Stod
-@ stub _Stodx
+@ cdecl _Stod(ptr ptr long)
+@ cdecl _Stodx(ptr ptr long ptr)
 @ stub _Stof
 @ stub _Stofx
-@ stub _Stold
-@ stub _Stoldx
+@ cdecl _Stold(ptr ptr long) _Stod
+@ cdecl _Stoldx(ptr ptr long ptr) _Stodx
 @ stub _Stoll
 @ stub _Stollx
 @ stub _Stolx