/* Read/write "x" from/to "file" as bigendian representation of "size" bits. On
* failure, return 1, else 0. (As of of now, all extern read/write functions
- * build on top of these.)
- *
- * Only use multiples of 8 greater or equal 32 for "size", so that storage
- * inside uint32_t is possible. Originally a bit number check prefaced the code
- * of both functions. It was removed as redundant due to all possible "size"
- * values being hardcoded into the library (i.e. in all extern functions calling
- * / wrapping around either function). If this ever changes, (re-)insert:
- *
- * if (0 == size || size > 32 || 0 != size % 8)
- * {
- * return 1;
- * }
+ * build on top of these.) Only use multiples of 8 greater or equal 32 for
+ * "size", so that storage inside uint32_t is possible.
*/
static uint8_t read_uintX_bigendian(FILE * file, uint32_t * x, uint8_t size);
static uint8_t write_uintX_bigendian(FILE * file, uint32_t x, uint8_t size);
-extern uint8_t read_uint16_bigendian(FILE * file, uint16_t * x)
-{
- /* See read_uint8() introductory code comment for rationale. */
- uint32_t y = * x;
- uint8_t err = read_uintX_bigendian(file, &y, 16);
- * x = (uint16_t) y;
- return err;
-}
-
-
-
extern uint8_t read_uint32_bigendian(FILE * file, uint32_t * x)
{
return read_uintX_bigendian(file, x, 32);
-extern uint8_t write_uint16_bigendian(uint16_t x, FILE * file)
-{
- return write_uintX_bigendian(file, x, 16);
-}
-
-
-
extern uint8_t write_uint32_bigendian(uint32_t x, FILE * file)
{
return write_uintX_bigendian(file, x, 32);
* fgetc()/fputc() failure.
*/
extern uint8_t read_uint8(FILE * file, uint8_t * x);
-extern uint8_t read_uint16_bigendian(FILE * file, uint16_t * x);
extern uint8_t read_uint32_bigendian(FILE * file, uint32_t * x);
extern uint8_t write_uint8(uint8_t x, FILE * file);
-extern uint8_t write_uint16_bigendian(uint16_t x, FILE * file);
extern uint8_t write_uint32_bigendian(uint32_t x, FILE * file);