From 481280e346c01408272f9b8cc9f941df75e0c99c Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Wed, 16 Dec 2015 09:56:52 +0100 Subject: add ntohs, ntohl, ntohll, htons, htonl, and htonll MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- src/arpa/inet/ntohs.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 src/arpa/inet/ntohs.c (limited to 'src/arpa/inet/ntohs.c') diff --git a/src/arpa/inet/ntohs.c b/src/arpa/inet/ntohs.c new file mode 100644 index 0000000..7aea8a0 --- /dev/null +++ b/src/arpa/inet/ntohs.c @@ -0,0 +1,40 @@ +/** + * 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 . + */ +#include + + +/** + * Convert a 16-bit quantity from network byte order + * little endian) to host byte order. + * + * @etymology (N)etwork byte order (to) (h)ost byte order, (s)hort. + * + * @param value A 16-bit quantity to convert. + * @return The value in host byte order. + * + * @since Always. + */ +uint16_t _ntohs(uint16_t value) +{ + unsigned char* v = (unsigned char*)&value; + uint16_t rc = 0; + rc |= (uint16_t)(v[0]) << 8; + rc |= (uint16_t)(v[1]) << 0; + return rc; +} + -- cgit v1.2.3-70-g09d2