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/**
* slibc — Yet another C library
* Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <arpa/inet.h>
#include <bits/intconf.h>
/**
* Convert a 32-bit quantity from network byte order
* (little endian) to host byte order.
*
* @etymology (N)etwork byte order (to) (h)ost byte order, (l)ong.
*
* @param value A 32-bit quantity to convert.
* @return The value in host byte order.
*
* @since Always.
*/
uint32_t _ntohl(uint32_t value)
{
#if __INT32_BYTEORDER == 0x01020304L
return value;
#elif __INT32_BYTEORDER == 0x04030201L
return (value >> 24) | ((value & 0xFF0000) >> 8) | ((value & 0x00FF00) << 8) | (value << 24);
#elif __INT32_BYTEORDER == 0x02010403L
return (value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
#else
unsigned char* v = (unsigned char*)&value;
uint32_t rc = 0;
rc |= (uint32_t)(v[0]) << 24;
rc |= (uint32_t)(v[1]) << 16;
rc |= (uint32_t)(v[2]) << 8;
rc |= (uint32_t)(v[3]) << 0;
return rc;
#endif
}
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