uint64p.c

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#include "uint_t.h"
 
void uint64_pack(char s[8],uint64 u)
{
  s[0] = u & 255; u >>= 8;
  s[1] = u & 255; u >>= 8;
  s[2] = u & 255; u >>= 8;
  s[3] = u & 255; u >>= 8;
  s[4] = u & 255; u >>= 8;
  s[5] = u & 255; u >>= 8;
  s[6] = u & 255; u >>= 8;
  s[7] = u & 255;
}
void uint64_pack_big(char s[8],uint64 u)
{
  s[7] = u & 255; u >>= 8;
  s[6] = u & 255; u >>= 8;
  s[5] = u & 255; u >>= 8;
  s[4] = u & 255; u >>= 8;
  s[3] = u & 255; u >>= 8;
  s[2] = u & 255; u >>= 8;
  s[1] = u & 255; u >>= 8;
  s[0] = u & 255; 
}
 
void uint64_unpack(char s[8],uint64 *u)
{
  uint64 result;
 
  result =  (unsigned char) s[7]; result <<= 8;
  result += (unsigned char) s[6]; result <<= 8;
  result += (unsigned char) s[5]; result <<= 8;
  result += (unsigned char) s[4]; result <<= 8;
  result += (unsigned char) s[3]; result <<= 8;
  result += (unsigned char) s[2]; result <<= 8;
  result += (unsigned char) s[1]; result <<= 8;
  result += (unsigned char) s[0];
 
  *u = result;
}
void uint64_unpack_big(char s[8],uint64 *u)
{
  uint64 result;
 
  result =  (unsigned char) s[0]; result <<= 8;
  result += (unsigned char) s[1]; result <<= 8;
  result += (unsigned char) s[2]; result <<= 8;
  result += (unsigned char) s[3]; result <<= 8;
  result += (unsigned char) s[4]; result <<= 8;
  result += (unsigned char) s[5]; result <<= 8;
  result += (unsigned char) s[6]; result <<= 8;
  result += (unsigned char) s[7];
 
  *u = result;
}