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-rw-r--r--include/ctype.h12
-rw-r--r--include/wctype.h2
2 files changed, 7 insertions, 7 deletions
diff --git a/include/ctype.h b/include/ctype.h
index 97b9737c..a605d089 100644
--- a/include/ctype.h
+++ b/include/ctype.h
@@ -16,12 +16,12 @@ int isxdigit(int);
int tolower(int);
int toupper(int);
-#define isalpha(a) ((unsigned)(((a)|32)-'a') < 26)
-#define isdigit(a) ((unsigned)((a)-'0') < 10)
-#define islower(a) ((unsigned)((a)-'a') < 26)
-#define isupper(a) ((unsigned)((a)-'A') < 26)
-#define isprint(a) ((unsigned)((a)-0x20) < 0x5f)
-#define isgraph(a) ((unsigned)((a)-0x21) < 0x5e)
+#define isalpha(a) ((((unsigned)(a)|32)-'a') < 26)
+#define isdigit(a) (((unsigned)(a)-'0') < 10)
+#define islower(a) (((unsigned)(a)-'a') < 26)
+#define isupper(a) (((unsigned)(a)-'A') < 26)
+#define isprint(a) (((unsigned)(a)-0x20) < 0x5f)
+#define isgraph(a) (((unsigned)(a)-0x21) < 0x5e)
diff --git a/include/wctype.h b/include/wctype.h
index af9be069..3a5af6e7 100644
--- 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
}