cursor

Example

 /* A buffer to store packed data */
 uint8_t buf[6];
 /* Construct a new writer cursor with the buffer we just defined */
 struct cursor_wtr wtr = cursor_wtr_new(buf, sizeof(buf));
 uint16_t written_u16 = 0x0123;
 uint32_t written_u32 = 0x456789AB;
 /* Write written_u16 to buf little-endian */
 cursor_pack_le_u16(&wtr, written_u16);
 /* Write written_u32 to buf big-endian */
 cursor_pack_be_u32(&wtr, written_u32);
 /* Construct a reader cursor */
 struct cursor_rdr rdr = cursor_rdr_new(buf, sizeof(buf));
 uint16_t read_u16 = 0;
 uint32_t read_u32 = 0;
 /* Read a packed little-endian uint16_t out of buf */
 cursor_unpack_le_u16(&rdr, &read_u16);
 /* Read a packed big-endian uint32_t out of buf */
 cursor_unpack_be_u32(&rdr, &read_u32);
 assert(read_u16 == written_u16);
 assert(read_u32 == written_u32);