1 files changed, 42 insertions, 0 deletions
diff --git a/strrneqlen.c b/strrneqlen.c
new file mode 100644
index 0000000..f76cac8
--- /dev/null
+++ b/strrneqlen.c
@@ -0,0 +1,42 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+#ifndef TEST
+
+
+extern inline size_t libsimple_strrneqlen(const char *, const char *, size_t);
+
+
+#else
+#include "test.h"
+
+int
+main(void)
+{
+	size_t i, j, n;
+
+	for (n = 0; n < 10; n++) {
+		char a[] = "abcdefgh", b[] = "abcdefgh";
+		size_t I, J;
+		assert(libsimple_strrneqlen("", "", n) == 0);
+		assert(libsimple_strrneqlen("x", "", n) == 0);
+		assert(libsimple_strrneqlen("x", "y", n) == 0);
+		assert(libsimple_strrneqlen("", "y", n) == 0);
+		for (i = 0; i <= 8; i++) {
+			for (j = 0; j <= 8; j++) {
+				I = 8 - i;
+				J = 8 - j;
+				assert(libsimple_strrneqlen(&a[i], &b[j], n) == (I == J ? MIN(I,n) : MIN(I,J) * (n >= MAX(I,J))));
+				a[i] = b[j] = '\0';
+				assert(libsimple_strrneqlen(a, b, n) == (MIN(i, n) == MIN(j, n) ? MIN(i, n) : 0));
+				a[i] = "abcdefgh"[i];
+				b[j] = "abcdefgh"[j];
+			}
+		}
+		assert(libsimple_strrneqlen("abc", "ABC", n) == 0);
+		assert(libsimple_strrneqlen("123", "123", n) == MIN(3, n));
+	}
+
+	return 0;
+}
+
+#endif