1  /*
       2   * No copyright is claimed.  This code is in the public domain; do with
       3   * it what you wish.
       4   */
       5  #ifndef UTIL_LINUX_ISO_H
       6  #define UTIL_LINUX_ISO_H
       7  
       8  #include <stdbool.h>
       9  #include <stdint.h>
      10  
      11  #include "c.h"
      12  
      13  static inline uint16_t isonum_721(const unsigned char *p)
      14  {
      15  	return ((p[0] & 0xff)
      16  		| ((p[1] & 0xff) << 8));
      17  }
      18  
      19  static inline uint16_t isonum_722(const unsigned char *p)
      20  {
      21  	return ((p[1] & 0xff)
      22  		| ((p[0] & 0xff) << 8));
      23  }
      24  
      25  static inline uint16_t isonum_723(const unsigned char *p, bool check_match)
      26  {
      27  	uint16_t le = isonum_721(p);
      28  	uint16_t be = isonum_722(p + 2);
      29  
      30  	if (check_match && le != be)
      31  		/* translation is useless */
      32  		warnx("723error: le=%d be=%d", le, be);
      33  	return (le);
      34  }
      35  
      36  static inline uint32_t isonum_731(const unsigned char *p)
      37  {
      38  	return ((p[0] & 0xff)
      39  		| ((p[1] & 0xff) << 8)
      40  		| ((p[2] & 0xff) << 16)
      41  		| (((uint32_t) p[3] & 0xff) << 24));
      42  }
      43  
      44  static inline uint32_t isonum_732(const unsigned char *p)
      45  {
      46  	return ((p[3] & 0xff)
      47  		| ((p[2] & 0xff) << 8)
      48  		| ((p[1] & 0xff) << 16)
      49  		| (((uint32_t) p[0] & 0xff) << 24));
      50  }
      51  
      52  static inline uint32_t isonum_733(const unsigned char *p, bool check_match)
      53  {
      54  	uint32_t le = isonum_731(p);
      55  	uint32_t be = isonum_732(p + 4);
      56  
      57  	if (check_match && le != be)
      58  		/* translation is useless */
      59  		warnx("733error: le=%d be=%d", le, be);
      60  	return(le);
      61  }
      62  
      63  #endif