Changeset 921 for trunk/lib/format_helper.c

Timestamp:

08/21/06 21:04:59 (7 years ago)

Author:

perry

Message:

Add new API for dealing with Big endian or Little Endian numbers on the
wrong endian machine.

File:

• trunk/lib/format_helper.c (modified) (1 diff)

trunk/lib/format_helper.c

@@ -272 +272 @@
 }
 
+uint64_t byteswap64(uint64_t num)
+{
+        return (byteswap32((num&0xFFFFFFFF00000000ULL)>>32))
+              |((uint64_t)byteswap32(num&0x00000000FFFFFFFFULL)<<32);
+}
+
+uint32_t byteswap32(uint32_t num)
+{
+        return ((num&0x000000FFU)<<24)
+                | ((num&0x0000FF00U)<<8)
+                | ((num&0x00FF0000U)>>8)
+                | ((num&0xFF000000U)>>24);
+}
+
+uint16_t byteswap16(uint16_t num)
+{
+        return ((num<<8)&0xFF00)|((num>>8)&0x00FF);
+}
+