diff --git a/reactos/lib/sdk/crt/math/i386/ldexp.c b/reactos/lib/sdk/crt/math/i386/ldexp.c
index b240275ef95..327e72a27b8 100644
--- a/reactos/lib/sdk/crt/math/i386/ldexp.c
+++ b/reactos/lib/sdk/crt/math/i386/ldexp.c
@@ -21,24 +21,32 @@
 
 #include <math.h>
 
-double ldexp (double __x, int __y);
-
-double ldexp (double __x, int __y)
+double ldexp (double value, int exp)
 {
-  register double __val;
+    register double result;
 #ifdef __GNUC__
-  __asm __volatile__
-    ("fscale"
-     : "=t" (__val) : "0" (__x), "u" ((double) __y));
+#if defined(__clang__)
+    asm ("fild %[exp]\n"
+         "fscale\n"
+         "fstp %%st(1)\n"
+         : [result] "=t" (result)
+         : [value] "0" (value), [exp] "m" (exp));
 #else
-  register double __dy = (double)__y;
+    asm ("fscale"
+        : "=t" (result)
+         : "0" (value), "u" ((double)exp)
+         : "1");
+#endif
+#else /* !__GNUC__ */
+  register double __dy = (double)exp;
   __asm
   {
     fld __dy
-    fld __x
+    fld value
     fscale
-    fstp __val
+    fstp result
   }
-#endif /*__GNUC__*/
-  return __val;
+#endif /* !__GNUC__ */
+  return result;
 }
+
diff --git a/reactos/lib/sdk/crt/misc/getargs.c b/reactos/lib/sdk/crt/misc/getargs.c
index 1bdb409ab46..18672e6bd44 100644
--- a/reactos/lib/sdk/crt/misc/getargs.c
+++ b/reactos/lib/sdk/crt/misc/getargs.c
@@ -22,7 +22,7 @@ int __argc = 0;
 
 extern wchar_t **__winitenv;
 
-char* strndup(char* name, size_t len)
+char* strndup(char const* name, size_t len)
 {
    char *s = malloc(len + 1);
    if (s != NULL)
diff --git a/reactos/lib/sdk/crt/signal/signal.c b/reactos/lib/sdk/crt/signal/signal.c
index 6cfe3f64b5a..5dd6381c53d 100644
--- a/reactos/lib/sdk/crt/signal/signal.c
+++ b/reactos/lib/sdk/crt/signal/signal.c
@@ -42,7 +42,7 @@ __p_sig_fn_t signal(int sig, __p_sig_fn_t func)
    }
 
    // check with IsBadCodePtr
-   if ( func < (__p_sig_fn_t)4096 && func != SIG_DFL && func != SIG_IGN)
+   if ( (uintptr_t)func < 4096 && func != SIG_DFL && func != SIG_IGN)
    {
       __set_errno(EINVAL);
       return SIG_ERR;