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#include "uint_t.h"
/**
@file uint128p.c
@author feh, jannis
@source djbdns6
@brief packing/unpacking 128 bit integer to/from char string
*/
void uint128_pack(char s[16], uint128 u)
{
// clang-format off
s[0] = u.lo & 255; u.lo >>= 8;
s[1] = u.lo & 255; u.lo >>= 8;
s[2] = u.lo & 255; u.lo >>= 8;
s[3] = u.lo & 255; u.lo >>= 8;
s[4] = u.lo & 255; u.lo >>= 8;
s[5] = u.lo & 255; u.lo >>= 8;
s[6] = u.lo & 255; u.lo >>= 8;
s[7] = u.lo & 255; u.lo >>= 8;
s[8] = u.hi & 255; u.hi >>= 8;
s[9] = u.hi & 255; u.hi >>= 8;
s[10] = u.hi & 255; u.hi >>= 8;
s[11] = u.hi & 255; u.hi >>= 8;
s[12] = u.hi & 255; u.hi >>= 8;
s[13] = u.hi & 255; u.hi >>= 8;
s[14] = u.hi & 255; u.hi >>= 8;
s[15] = u.hi & 255;
// clang-format on
}
void uint128_pack_big(char s[16], uint128 u)
{
// clang-format off
s[15] = u.lo & 255; u.lo >>= 8;
s[14] = u.lo & 255; u.lo >>= 8;
s[13] = u.lo & 255; u.lo >>= 8;
s[12] = u.lo & 255; u.lo >>= 8;
s[11] = u.lo & 255; u.lo >>= 8;
s[10] = u.lo & 255; u.lo >>= 8;
s[9] = u.lo & 255; u.lo >>= 8;
s[8] = u.lo & 255; u.lo >>= 8;
s[7] = u.hi & 255; u.hi >>= 8;
s[6] = u.hi & 255; u.hi >>= 8;
s[5] = u.hi & 255; u.hi >>= 8;
s[4] = u.hi & 255; u.hi >>= 8;
s[3] = u.hi & 255; u.hi >>= 8;
s[2] = u.hi & 255; u.hi >>= 8;
s[1] = u.hi & 255; u.hi >>= 8;
s[0] = u.hi & 255;
// clang-format on
}
void uint128_unpack(char s[16], uint128 *u)
{
uint128 result;
result.hi = result.lo = 0ULL;
// clang-format off
result.hi = (unsigned char) s[15]; result.hi <<= 8;
result.hi += (unsigned char) s[14]; result.hi <<= 8;
result.hi += (unsigned char) s[13]; result.hi <<= 8;
result.hi += (unsigned char) s[12]; result.hi <<= 8;
result.hi += (unsigned char) s[11]; result.hi <<= 8;
result.hi += (unsigned char) s[10]; result.hi <<= 8;
result.hi += (unsigned char) s[9]; result.hi <<= 8;
result.hi += (unsigned char) s[8]; //correct
result.lo += (unsigned char) s[7]; result.lo <<= 8;
result.lo += (unsigned char) s[6]; result.lo <<= 8;
result.lo += (unsigned char) s[5]; result.lo <<= 8;
result.lo += (unsigned char) s[4]; result.lo <<= 8;
result.lo += (unsigned char) s[3]; result.lo <<= 8;
result.lo += (unsigned char) s[2]; result.lo <<= 8;
result.lo += (unsigned char) s[1]; result.lo <<= 8;
result.lo += (unsigned char) s[0];
// clang-format on
*u = result;
}
void uint128_unpack_big(char s[16], uint128 *u)
{
uint128 result;
result.hi = result.lo = 0ULL;
// clang-format off
result.hi = (unsigned char) s[0]; result.hi <<= 8;
result.hi += (unsigned char) s[1]; result.hi <<= 8;
result.hi += (unsigned char) s[2]; result.hi <<= 8;
result.hi += (unsigned char) s[3]; result.hi <<= 8;
result.hi += (unsigned char) s[4]; result.hi <<= 8;
result.hi += (unsigned char) s[5]; result.hi <<= 8;
result.hi += (unsigned char) s[6]; result.hi <<= 8;
result.hi += (unsigned char) s[7];
result.lo += (unsigned char) s[8]; result.lo <<= 8;
result.lo += (unsigned char) s[9]; result.lo <<= 8;
result.lo += (unsigned char) s[10]; result.lo <<= 8;
result.lo += (unsigned char) s[11]; result.lo <<= 8;
result.lo += (unsigned char) s[12]; result.lo <<= 8;
result.lo += (unsigned char) s[13]; result.lo <<= 8;
result.lo += (unsigned char) s[14]; result.lo <<= 8;
result.lo += (unsigned char) s[15];
// clang-format on
*u = result;
}
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