johnmcfarlane

#include <algorithm>
#include <limits>

template<typename Number = int, typename Counter = int>
class stats {
public:
  void sample(Number const & n) {
    _sum += n;
    _count ++;
    _minimum = std::min(_minimum, n);

johnmcfarlane

// Signed 15:16 Fixed-Point Square Function Using sg14::elastic

// Here's how to use the fixed_point library on Godbolt.org.
// Normally, you'd just add `#include <sg14/fixed_point>`.
#define SG14_GODBOLT_ORG
#include <https://raw.githubusercontent.com/johnmcfarlane/fixed_point/develop/include/sg14/bits/config.h>
#include <https://raw.githubusercontent.com/johnmcfarlane/fixed_point/develop/include/sg14/bits/config.h>
#include <https://raw.githubusercontent.com/johnmcfarlane/fixed_point/develop/include/sg14/cstdint>
#include <https://raw.githubusercontent.com/johnmcfarlane/fixed_point/develop/include/sg14/limits>
#include <https://raw.githubusercontent.com/johnmcfarlane/fixed_point/develop/include/sg14/type_traits>

johnmcfarlane

#include <algorithm>
#include <iterator>
#include <memory>

namespace sg14 {

  template<typename T>
  class buffer : public std::iterator_traits<T*> {
  public:
    using size_type = typename buffer<T>::difference_type;

johnmcfarlane

#!/usr/bin/env python3

from argparse import ArgumentParser
from io import StringIO
from itertools import chain
from os import chdir, curdir, path
from subprocess import CalledProcessError, check_output, PIPE
from sys import argv, stderr

from report import benchmarks_from_buffer, csv_from_report, table_from_benchmarks

johnmcfarlane

// examples from Krister Walfridsson's "How undefined signed overflow enables optimizations in GCC":
// https://kristerw.blogspot.com/2016/02/how-undefined-signed-overflow-enables.html
// https://godbolt.org/g/Hw797e

// Other relevant material:
// [CppCon 2016: Jon Kalb “unsigned: A Guideline for Better Code"](https://www.youtube.com/watch?v=wvtFGa6XJDU)
// [CppCon 2016: Chandler Carruth “Garbage In, Garbage Out: Arguing about Undefined Behavior..."](https://www.youtube.com/watch?v=yG1OZ69H_-o&t=2542s)

#include <algorithm>

johnmcfarlane

A quick vote for commonmark:

• it's very easy to read and write - even in as raw text;
• it's well supported by GitHub;
• it does 90% of what you need to write technical documentation;
• it allows you to casually drop snippets of HTML/JSON in for the other 10% and
• there are plenty of tools for converting it to HTML and other formats (see Pandoc and cmark).

In fact the above rant is commonmark! https://gist.github.com/johnmcfarlane/aec9d1c55d25bbbc086469c0c897b580

johnmcfarlane

//          Copyright John McFarlane 2017.
// Distributed under the Boost Software License, Version 1.0.
//    (See accompanying file ../LICENSE_1_0.txt or copy at
//          http://www.boost.org/LICENSE_1_0.txt)

// mechanically retrieved, single-header version of fixed_point library
// https://github.com/johnmcfarlane/fixed_point

#if ! defined(SG14_FIXED_POINT_SINGLE_HEADER)

johnmcfarlane

// here is a very small header

johnmcfarlane

<code_scheme name="jmcf">
  <Objective-C>
    <option name="INDENT_NAMESPACE_MEMBERS" value="0" />
    <option name="INDENT_C_STRUCT_MEMBERS" value="2" />
    <option name="INDENT_CLASS_MEMBERS" value="2" />
    <option name="INDENT_INSIDE_CODE_BLOCK" value="2" />
    <option name="KEEP_STRUCTURES_IN_ONE_LINE" value="true" />
    <option name="KEEP_CASE_EXPRESSIONS_IN_ONE_LINE" value="true" />
    <option name="FUNCTION_NON_TOP_AFTER_RETURN_TYPE_WRAP" value="0" />
    <option name="FUNCTION_TOP_AFTER_RETURN_TYPE_WRAP" value="0" />

johnmcfarlane

#include <stdlib.h>
namespace a_namespace{
  constexpr int x = 6;
#if defined TEST
#error The test passed (ironically)
#endif
}