1 files changed, 16 insertions, 0 deletions
diff --git a/usr/src/boot/lib/libstand/stand.h b/usr/src/boot/lib/libstand/stand.h
index 9406d4f296..5f94a7fa58 100644
--- a/usr/src/boot/lib/libstand/stand.h
+++ b/usr/src/boot/lib/libstand/stand.h
@@ -238,6 +238,22 @@ static __inline int isalnum(int c)
 	return (isalpha(c) || isdigit(c));
 }
 
+static __inline int iscntrl(int c)
+{
+	return ((c >= 0 && c < ' ') || c == 127);
+}
+
+static __inline int isgraph(int c)
+{
+	return (c >= '!' && c <= '~');
+}
+
+static __inline int ispunct(int c)
+{
+	return ((c >= '!' && c <= '/') || (c >= ':' && c <= '@') ||
+	    (c >= '[' && c <= '`') || (c >= '{' && c <= '~'));
+}
+
 static __inline int toupper(int c)
 {
 	return (islower(c) ? c - 'a' + 'A' : c);