1 files changed, 17 insertions, 10 deletions
diff --git a/src/crc.c b/src/crc.c
index de1a085..7aceb5c 100644
--- a/src/crc.c
+++ b/src/crc.c
@@ -55,23 +55,30 @@ static const uint32_t crc_table[256] = {
   0x2d02ef8dL
 };
 
-#define DO1(buf) crc = crc_table[((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8);
+#define DO1(buf) crc = crc_table[(crc ^ (uint32_t) (*buf++)) & 0xff] ^ (crc >> 8);
 #define DO2(buf)  DO1(buf); DO1(buf);
 #define DO4(buf)  DO2(buf); DO2(buf);
 #define DO8(buf)  DO4(buf); DO4(buf);
 
-uint32_t crc32(uint32_t crc, const uint8_t *buf, int len)
+uint32_t
+crc32 (uint32_t crc, const void *_buf, int len)
 {
-    if (!buf) return 0;
+  uint8_t *buf = (uint8_t *) _buf;
+  if (!buf)
+    return 0;
 
-    crc = crc ^ 0xffffffffL;
-    while (len >= 8)
+
+  crc = crc ^ 0xffffffffL;
+  while (len >= 8)
     {
-      DO8(buf);
+      DO8 (buf);
       len -= 8;
     }
-    if (len) do {
-      DO1(buf);
-    } while (--len);
-    return crc ^ 0xffffffffL;
+  if (len)
+    do
+      {
+        DO1 (buf);
+      }
+    while (--len);
+  return crc ^ 0xffffffffL;
 }