Initial revision

lib/ip/strcasecmp.c

@@ -0,0 +1,43 @@
+/*
+strcasecmp.c
+
+Created Oct 14, 1991 by Philip Homburg
+*/
+
+#include <ctype.h>
+#include <string.h>
+
+#ifdef __STDC__
+#define _CONST	const
+#else
+#define _CONST
+#endif
+
+int
+strcasecmp(s1, s2)
+_CONST char *s1, *s2;
+{
+	int c1, c2;
+	while (c1= toupper(*s1++), c2= toupper(*s2++), c1 == c2 && (c1 & c2))
+		;
+	if (c1 & c2)
+		return c1 < c2 ? -1 : 1;
+	return c1 ? 1 : (c2 ? -1 : 0);
+}
+
+int
+strncasecmp(s1, s2, len)
+_CONST char *s1, *s2;
+size_t len;
+{
+	int c1, c2;
+	do {
+		if (len == 0)
+			return 0;
+		len--;
+	} while (c1= toupper(*s1++), c2= toupper(*s2++), c1 == c2 && (c1 & c2))
+		;
+	if (c1 & c2)
+		return c1 < c2 ? -1 : 1;
+	return c1 ? 1 : (c2 ? -1 : 0);
+}