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/*
	simple ring buffer
*/
#ifndef RING_BUFFER_H_
#define RING_BUFFER_H_

enum E_RING_BUFFERS { e_RING_OK = 0, e_RING_EMPTY, e_RING_FULL, e_RING_ERROR };

#define T_RING(T, tag, len)\
	struct tag { T buffer[len]; unsigned int head, tail; };\

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def signed(chars, index = 0, length = 16):
	"""convert a `length/4` character hex string into a signed `length`-bit number"""
	v = int(chars[index:][:(length / 4)], 16)
	return v if v < (1 << (length - 1)) else v - (1 << length)

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// count down to zero
num -= !!(num - 1);
// count up to MAX
num += (num < MAX);

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from Tkinter import *
from ttk import *
class RepeatButton(Button):
	def __init__(self, _, **kw):
		Button.__init__(self, _)
		self.config(**kw)
		self.bind('<Button-1>', self._start)
		self.bind('<ButtonRelease-1>', self._end)
	def _start(self, event):
		self._delay = 1500

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enum ID {
    Standard(u16),
    Extended(u32) 
}
enum Payload {
    Value {
        length : u8,
        data: [u8; 8]
    },
    Remote(u8)

fbstj

<script src="//ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<style>
#view { float: right; width: 75vw; height: 98vh; }
nav { float: left; width: 20vw; height: 98vh; }
#nav { height: 100%; max-height: 90vh; overflow-y: scroll; }
.active { font-weight: bold; }
</style>
<title>Book search</title>
<iframe name=bob id=view src=blank.html></iframe>
<nav>