FM / detail

/usr/include/boost/histogram/detail

Name	Size	Mode	Actions
accumulator_traits.hpp	2812	0644	edit dl rm
args_type.hpp	1546	0644	edit dl rm
argument_traits.hpp	2548	0644	edit dl rm
array_wrapper.hpp	2050	0644	edit dl rm
axes.hpp	13362	0644	edit dl rm
common_type.hpp	1335	0644	edit dl rm
convert_integer.hpp	566	0644	edit dl rm
counting_streambuf.hpp	1923	0644	edit dl rm
detect.hpp	8320	0644	edit dl rm
fill.hpp	12609	0644	edit dl rm
fill_n.hpp	13696	0644	edit dl rm
index_translator.hpp	3437	0644	edit dl rm
iterator_adaptor.hpp	4484	0644	edit dl rm
large_int.hpp	6543	0644	edit dl rm
limits.hpp	986	0644	edit dl rm
linearize.hpp	4482	0644	edit dl rm
make_default.hpp	710	0644	edit dl rm
mutex_base.hpp	1228	0644	edit dl rm
nonmember_container_access.hpp	1448	0644	edit dl rm
operators.hpp	4494	0644	edit dl rm
optional_index.hpp	1426	0644	edit dl rm
priority.hpp	593	0644	edit dl rm
reduce_command.hpp	2541	0644	edit dl rm
relaxed_equal.hpp	1217	0644	edit dl rm
relaxed_tuple_size.hpp	956	0644	edit dl rm
replace_type.hpp	818	0644	edit dl rm
safe_comparison.hpp	2519	0644	edit dl rm
span.hpp	9048	0644	edit dl rm
static_if.hpp	1477	0644	edit dl rm
sub_array.hpp	3577	0644	edit dl rm
try_cast.hpp	1575	0644	edit dl rm
tuple_slice.hpp	1019	0644	edit dl rm
type_name.hpp	1083	0644	edit dl rm
variant_proxy.hpp	2430	0644	edit dl rm

Edit: /usr/include/boost/histogram/detail/safe_comparison.hpp (2519B)

// Copyright 2019 Hans Dembinski
//
// 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)

#ifndef BOOST_HISTOGRAM_DETAIL_SAFE_COMPARISON_HPP
#define BOOST_HISTOGRAM_DETAIL_SAFE_COMPARISON_HPP

#include <boost/mp11/utility.hpp>
#include <boost/type.hpp>
#include <type_traits>

namespace boost {
namespace histogram {
namespace detail {

template <class T>
auto make_unsigned(const T& t) noexcept {
  static_assert(std::is_integral<T>::value, "");
  return static_cast<std::make_unsigned_t<T>>(t);
}

template <class T>
using number_category =
    mp11::mp_if<std::is_integral<T>,
                mp11::mp_if<std::is_signed<T>, type<int>, type<unsigned>>, type<void>>;

// version of std::equal_to<> which handles signed and unsigned integers correctly
struct safe_equal {
  template <class T, class U>
  bool operator()(const T& t, const U& u) const noexcept {
    return impl(number_category<T>{}, number_category<U>{}, t, u);
  }

template <class C1, class C2, class T, class U>
  bool impl(C1, C2, const T& t, const U& u) const noexcept {
    return t == u;
  }

template <class T, class U>
  bool impl(type<int>, type<unsigned>, const T& t, const U& u) const noexcept {
    return t >= 0 && make_unsigned(t) == u;
  }

template <class T, class U>
  bool impl(type<unsigned>, type<int>, const T& t, const U& u) const noexcept {
    return impl(type<int>{}, type<unsigned>{}, u, t);
  }
};

// version of std::less<> which handles signed and unsigned integers correctly
struct safe_less {
  template <class T, class U>
  bool operator()(const T& t, const U& u) const noexcept {
    return impl(number_category<T>{}, number_category<U>{}, t, u);
  }

template <class C1, class C2, class T, class U>
  bool impl(C1, C2, const T& t, const U& u) const noexcept {
    return t < u;
  }

template <class T, class U>
  bool impl(type<int>, type<unsigned>, const T& t, const U& u) const noexcept {
    return t < 0 || make_unsigned(t) < u;
  }

template <class T, class U>
  bool impl(type<unsigned>, type<int>, const T& t, const U& u) const noexcept {
    return 0 < u && t < make_unsigned(u);
  }
};

// version of std::greater<> which handles signed and unsigned integers correctly
struct safe_greater {
  template <class T, class U>
  bool operator()(const T& t, const U& u) const noexcept {
    return safe_less()(u, t);
  }
};

} // namespace detail
} // namespace histogram
} // namespace boost

#endif

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