diff --git a/reactos/lib/sdk/crt/math/i386/ldexp.c b/reactos/lib/sdk/crt/math/i386/ldexp.c
index 97046f15a4c..d28ddb02928 100644
--- a/reactos/lib/sdk/crt/math/i386/ldexp.c
+++ b/reactos/lib/sdk/crt/math/i386/ldexp.c
@@ -30,7 +30,14 @@ double ldexp (double __x, int __y)
     ("fscale"
      : "=t" (__val) : "0" (__x), "u" ((double) __y));
 #else
-#error IMPLEMENT ME
+  register double __dy = (double)__y;
+  __asm
+  {
+    fld __dy
+    fld __x
+    fscale
+    fstp __val
+  }
 #endif /*__GNUC__*/
   return __val;
 }