Init commit

1 files changed, 54 insertions, 0 deletions

diff --git a/lib/le.c b/lib/le.c
new file mode 100644
index 0000000..47ed5f8
--- /dev/null
+++ b/lib/le.c
@@ -0,0 +1,54 @@
+/*  lib/le.c  --  Basic little endian byte order functions
+ *
+ * Copyright (C) 2016 Tomasz Kramkowski <tk@the-tk.com>
+ *
+ *  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 2 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, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#include <stdint.h>
+
+#include "le.h"
+
+uint16_t le16toh(const void *_data)
+{
+	const unsigned char *data = _data;
+
+	return (uint16_t)data[0] | (uint16_t)data[1] << 8;
+}
+
+uint32_t le32toh(const void *_data)
+{
+	const unsigned char *data = _data;
+
+	return (uint32_t)data[0] | (uint32_t)data[1] << 8
+		| (uint32_t)data[2] << 16 | (uint32_t)data[3] << 24;
+}
+
+void htole16(void *_data, uint16_t value)
+{
+	unsigned char *data = _data;
+
+	data[0] = value >> 0 & 0xff;
+	data[1] = value >> 8 & 0xff;
+}
+
+void htole32(void *_data, uint32_t value)
+{
+	unsigned char *data = _data;
+
+	data[0] = value >> 0 & 0xff;
+	data[1] = value >> 8 & 0xff;
+	data[2] = value >> 16 & 0xff;
+	data[3] = value >> 24 & 0xff;
+}