Move all sources to subdirs

src/test/test_crc32.cpp

@@ -0,0 +1,28 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.1 (see README.md for details)
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdint.h>
+
+#include "malloc_or_die.h"
+#include "errno.h"
+#include "crc32c.h"
+
+int main(int narg, char *args[])
+{
+    int bufsize = 65536;
+    uint8_t *buf = (uint8_t*)malloc_or_die(bufsize);
+    uint32_t csum = 0;
+    while (1)
+    {
+        int r = read(0, buf, bufsize);
+        if (r <= 0 && errno != EAGAIN && errno != EINTR)
+            break;
+        csum = crc32c(csum, buf, r);
+    }
+    free(buf);
+    printf("%08x\n", csum);
+    return 0;
+}