initial commit

2026-07-18 20:34:55 +02:00
commit 59ad004c96
474 changed files with 226635 additions and 0 deletions
@@ -0,0 +1,49 @@
+#include <string.h>
+#include <assert.h>
+#include <stdio.h>
+
+unsigned b[4096];
+
+void testfwd(unsigned sz)
+{
+	for(unsigned i=0; i<4096; i++)
+		b[i] = i;
+
+	memmove(b + 100, b + 101, 2 * sz);
+
+	for(unsigned i=0; i<100; i++)
+		assert(b[i] == i);
+	for(unsigned i=100; i<100 + sz; i++)
+		assert(b[i] == i + 1);
+	for(unsigned i=100 + sz; i<4096; i++)
+		assert(b[i] == i);
+}
+
+void testback(unsigned sz)
+{
+	for(unsigned i=0; i<4096; i++)
+		b[i] = i;
+
+	memmove(b + 101, b + 100, 2 * sz);
+
+	for(unsigned i=0; i<101; i++)
+		assert(b[i] == i);
+	for(unsigned i=101; i<101 + sz; i++)
+		assert(b[i] == i - 1);
+	for(unsigned i=101 + sz; i<4096; i++)
+		assert(b[i] == i);
+}
+
+int main(void)
+{
+	for(unsigned i=1; i<2048; i *= 2)
+	{
+		testfwd(i - 1);
+		testfwd(i);
+		testback(i);
+		testback(i - 1);
+	}
+
+	return 0;
+}
+