diff --git a/include/libc/math.h b/include/libc/math.h
index 3adb229f..b523798d 100644
--- a/include/libc/math.h
+++ b/include/libc/math.h
@@ -50,11 +50,12 @@ typedef union {
 
 #ifdef __cplusplus
 extern "C" {
-#endif
+f32 __sinf(f32) throw();
+f32 __cosf(f32) throw();
+}
+#else
 f32 __sinf(f32);
 f32 __cosf(f32);
-#ifdef __cplusplus
-}
 #endif
 
 #endif