src/uint16p.c


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#include "uint_t.h"

/**
  @file uint16p.c
  @author djb
  @source qmail
  @brief packing/unpacking 16 bit integer to/from char string
*/

void uint16_pack(char s[2], uint16 u)
{
  s[0] = u & 255;
  s[1] = u >> 8;
}

void uint16_pack_big(char s[2], uint16 u)
{
  s[1] = u & 255;
  s[0] = u >> 8;
}

void uint16_unpack(char s[2], uint16 *u)
{
  uint16 result;

  result = (unsigned char)s[1];
  result <<= 8;
  result += (unsigned char)s[0];

  *u = result;
}

void uint16_unpack_big(char s[2], uint16 *u)
{
  uint16 result;

  result = (unsigned char)s[0];
  result <<= 8;
  result += (unsigned char)s[1];

  *u = result;
}