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-rw-r--r--include/mruby.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/mruby.h b/include/mruby.h
index 2f2f3753d..b741e6444 100644
--- a/include/mruby.h
+++ b/include/mruby.h
@@ -274,6 +274,8 @@ mrb_value mrb_check_funcall(mrb_state *mrb, mrb_value recv, mrb_sym mid, int arg
#define ISALPHA(c) (ISASCII(c) && isalpha((int)(unsigned char)(c)))
#define ISDIGIT(c) (ISASCII(c) && isdigit((int)(unsigned char)(c)))
#define ISXDIGIT(c) (ISASCII(c) && isxdigit((int)(unsigned char)(c)))
+#define TOUPPER(c) (ISASCII(c) ? toupper((int)(unsigned char)(c)) : (c))
+#define TOLOWER(c) (ISASCII(c) ? tolower((int)(unsigned char)(c)) : (c))
#endif
mrb_value mrb_exc_new(mrb_state *mrb, struct RClass *c, const char *ptr, long len);