fixed a typo in SDL_ceilf()
diff --git a/src/stdlib/SDL_stdlib.c b/src/stdlib/SDL_stdlib.c
index ccd7581..b6dc32a 100644
--- a/src/stdlib/SDL_stdlib.c
+++ b/src/stdlib/SDL_stdlib.c
@@ -148,7 +148,7 @@ SDL_ceilf(float x)
#if defined(HAVE_CEILF)
return ceilf(x);
#else
- return (float)SDL_ceil((float)x);
+ return (float)SDL_ceil((double)x);
#endif
}