add ntohs, ntohl, ntohll, htons, htonl, and htonll

Signed-off-by: Mattias Andrée <maandree@member.fsf.org>

1 files changed, 48 insertions, 0 deletions

diff --git a/src/arpa/inet/ntohll.c b/src/arpa/inet/ntohll.c
new file mode 100644
index 0000000..f25d64c
--- /dev/null
+++ b/src/arpa/inet/ntohll.c
@@ -0,0 +1,48 @@
+/**
+ * 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>
+
+
+/**
+ * Convert a 64-bit quantity from network byte order
+ * (little endian) to host byte order.
+ * 
+ * This is a slibc extension.
+ * 
+ * @etymology  (N)etwork byte order (to) (h)ost byte order, (l)ong (l)ong.
+ * 
+ * @param   value  A 64-bit quantity to convert.
+ * @return         The value in host byte order.
+ * 
+ * @since  Always.
+ */
+uint64_t _ntohll(uint64_t value)
+{
+  unsigned char* v = (unsigned char*)&value;
+  uint64_t rc = 0;
+  rc |= (uint64_t)(v[0]) << 56;
+  rc |= (uint64_t)(v[1]) << 48;
+  rc |= (uint64_t)(v[2]) << 40;
+  rc |= (uint64_t)(v[3]) << 32;
+  rc |= (uint64_t)(v[4]) << 24;
+  rc |= (uint64_t)(v[5]) << 16;
+  rc |= (uint64_t)(v[6]) <<  8;
+  rc |= (uint64_t)(v[7]) <<  0;
+  return rc;
+}
+