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-rw-r--r--Src/ztype.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/Src/ztype.h b/Src/ztype.h
index 2732682a2..b8bc584db 100644
--- a/Src/ztype.h
+++ b/Src/ztype.h
@@ -58,3 +58,8 @@
 #define imeta(X) _icom(X,IMETA)
 #define iwsep(X) _icom(X,IWSEP)
 #define inull(X) _icom(X,INULL)
+
+#define iascii(X) isascii(STOUC(X))
+#define ilower(X) islower(STOUC(X))
+#define iprint(X) isprint(STOUC(X))
+#define iupper(X) isupper(STOUC(X))