fix ctype macros to cast argument to (unsigned) first

[musl] / include / wctype.h

diff --git a/include/wctype.h b/include/wctype.h
index af9be06..3a5af6e 100644 (file)
--- a/include/wctype.h
+++ b/include/wctype.h
@@ -36,7 +36,7 @@ wctrans_t wctrans(const char *);
 wctype_t  wctype(const char *);
 
 #undef iswdigit
-#define iswdigit(a) ((unsigned)((a)-L'0') < 10)
+#define iswdigit(a) (((unsigned)(a)-L'0') < 10)
 
 #ifdef __cplusplus
 }