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type_traits/	-	0755	rm
addressof.hpp	1973	0644	edit dl rm
aligned_variable.hpp	1853	0644	edit dl rm
atomic_flag_impl.hpp	4525	0644	edit dl rm
atomic_impl.hpp	56095	0644	edit dl rm
atomic_ref_impl.hpp	54073	0644	edit dl rm
bitwise_cast.hpp	2691	0644	edit dl rm
bitwise_fp_cast.hpp	2509	0644	edit dl rm
capabilities.hpp	7520	0644	edit dl rm
caps_arch_gcc_aarch32.hpp	1617	0644	edit dl rm
caps_arch_gcc_aarch64.hpp	2238	0644	edit dl rm
caps_arch_gcc_alpha.hpp	940	0644	edit dl rm
caps_arch_gcc_arm.hpp	3573	0644	edit dl rm
caps_arch_gcc_ppc.hpp	1581	0644	edit dl rm
caps_arch_gcc_sparc.hpp	940	0644	edit dl rm
caps_arch_gcc_x86.hpp	2013	0644	edit dl rm
caps_arch_msvc_arm.hpp	943	0644	edit dl rm
caps_arch_msvc_x86.hpp	1698	0644	edit dl rm
caps_gcc_atomic.hpp	7438	0644	edit dl rm
caps_gcc_sync.hpp	1715	0644	edit dl rm
caps_linux_arm.hpp	963	0644	edit dl rm
caps_windows.hpp	880	0644	edit dl rm
cas_based_exchange.hpp	1348	0644	edit dl rm
classify.hpp	2133	0644	edit dl rm
config.hpp	7945	0644	edit dl rm
core_arch_operations.hpp	1481	0644	edit dl rm
core_arch_operations_fwd.hpp	972	0644	edit dl rm
core_arch_ops_gcc_aarch32.hpp	41910	0644	edit dl rm
core_arch_ops_gcc_aarch64.hpp	69364	0644	edit dl rm
core_arch_ops_gcc_alpha.hpp	27813	0644	edit dl rm
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core_arch_ops_gcc_ppc.hpp	39185	0644	edit dl rm
core_arch_ops_gcc_sparc.hpp	7480	0644	edit dl rm
core_arch_ops_gcc_x86.hpp	39479	0644	edit dl rm
core_arch_ops_msvc_arm.hpp	34246	0644	edit dl rm
core_arch_ops_msvc_x86.hpp	31645	0644	edit dl rm
core_operations.hpp	1322	0644	edit dl rm
core_operations_emulated.hpp	8138	0644	edit dl rm
core_operations_emulated_fwd.hpp	1024	0644	edit dl rm
core_operations_fwd.hpp	942	0644	edit dl rm
core_ops_cas_based.hpp	3281	0644	edit dl rm
core_ops_gcc_atomic.hpp	12238	0644	edit dl rm
core_ops_gcc_sync.hpp	10690	0644	edit dl rm
core_ops_linux_arm.hpp	6364	0644	edit dl rm
core_ops_windows.hpp	7766	0644	edit dl rm
extending_cas_based_arithmetic.hpp	2441	0644	edit dl rm
extra_fp_operations.hpp	867	0644	edit dl rm
extra_fp_operations_fwd.hpp	1065	0644	edit dl rm
extra_fp_ops_emulated.hpp	4864	0644	edit dl rm
extra_fp_ops_generic.hpp	7222	0644	edit dl rm
extra_operations.hpp	825	0644	edit dl rm
extra_operations_fwd.hpp	1034	0644	edit dl rm
extra_ops_emulated.hpp	11876	0644	edit dl rm
extra_ops_gcc_aarch32.hpp	37869	0644	edit dl rm
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extra_ops_generic.hpp	17217	0644	edit dl rm
extra_ops_msvc_arm.hpp	3765	0644	edit dl rm
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fence_arch_operations.hpp	1077	0644	edit dl rm
fence_arch_ops_gcc_aarch32.hpp	1701	0644	edit dl rm
fence_arch_ops_gcc_aarch64.hpp	1624	0644	edit dl rm
fence_arch_ops_gcc_alpha.hpp	1411	0644	edit dl rm
fence_arch_ops_gcc_arm.hpp	2769	0644	edit dl rm
fence_arch_ops_gcc_ppc.hpp	1773	0644	edit dl rm
fence_arch_ops_gcc_sparc.hpp	2002	0644	edit dl rm
fence_arch_ops_gcc_x86.hpp	2557	0644	edit dl rm
fence_arch_ops_msvc_arm.hpp	1787	0644	edit dl rm
fence_arch_ops_msvc_x86.hpp	1998	0644	edit dl rm
fence_operations.hpp	1007	0644	edit dl rm
fence_operations_emulated.hpp	1294	0644	edit dl rm
fence_ops_gcc_atomic.hpp	2399	0644	edit dl rm
fence_ops_gcc_sync.hpp	1367	0644	edit dl rm
fence_ops_linux_arm.hpp	1792	0644	edit dl rm
fence_ops_windows.hpp	1848	0644	edit dl rm
float_sizes.hpp	7570	0644	edit dl rm
footer.hpp	505	0644	edit dl rm
fp_operations.hpp	807	0644	edit dl rm
fp_operations_fwd.hpp	1001	0644	edit dl rm
fp_ops_emulated.hpp	2714	0644	edit dl rm
fp_ops_generic.hpp	2919	0644	edit dl rm
futex.hpp	5388	0644	edit dl rm
gcc_arm_asm_common.hpp	4031	0644	edit dl rm
gcc_atomic_memory_order_utils.hpp	2804	0644	edit dl rm
header.hpp	2624	0644	edit dl rm
integral_conversions.hpp	4306	0644	edit dl rm
interlocked.hpp	34503	0644	edit dl rm
intptr.hpp	992	0644	edit dl rm
int_sizes.hpp	4987	0644	edit dl rm
link.hpp	1534	0644	edit dl rm
lock_pool.hpp	4689	0644	edit dl rm
memory_order_utils.hpp	1576	0644	edit dl rm
once_flag.hpp	1136	0644	edit dl rm
ops_gcc_aarch32_common.hpp	1577	0644	edit dl rm
ops_gcc_aarch64_common.hpp	1467	0644	edit dl rm
ops_gcc_arm_common.hpp	1963	0644	edit dl rm
ops_gcc_ppc_common.hpp	2762	0644	edit dl rm
ops_msvc_common.hpp	1318	0644	edit dl rm
pause.hpp	1494	0644	edit dl rm
platform.hpp	7210	0644	edit dl rm
storage_traits.hpp	5448	0644	edit dl rm
string_ops.hpp	1719	0644	edit dl rm
wait_capabilities.hpp	16861	0644	edit dl rm
wait_caps_dragonfly_umtx.hpp	1055	0644	edit dl rm
wait_caps_freebsd_umtx.hpp	1539	0644	edit dl rm
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wait_operations.hpp	828	0644	edit dl rm
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wait_ops_futex.hpp	3416	0644	edit dl rm
wait_ops_generic.hpp	4263	0644	edit dl rm
wait_ops_windows.hpp	4848	0644	edit dl rm

Edit: /usr/include/boost/atomic/detail/extra_fp_ops_generic.hpp (7222B)

/*
 * 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)
 *
 * Copyright (c) 2018 Andrey Semashev
 */
/*!
 * \file   atomic/detail/extra_fp_ops_generic.hpp
 *
 * This header contains generic implementation of the extra floating point atomic operations.
 */

#ifndef BOOST_ATOMIC_DETAIL_EXTRA_FP_OPS_GENERIC_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_EXTRA_FP_OPS_GENERIC_HPP_INCLUDED_

#include <cstddef>
#include <boost/memory_order.hpp>
#include <boost/atomic/detail/config.hpp>
#include <boost/atomic/detail/bitwise_fp_cast.hpp>
#include <boost/atomic/detail/storage_traits.hpp>
#include <boost/atomic/detail/extra_fp_operations_fwd.hpp>
#include <boost/atomic/detail/type_traits/is_iec559.hpp>
#include <boost/atomic/detail/type_traits/is_integral.hpp>
#include <boost/atomic/detail/header.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#if defined(BOOST_GCC) && BOOST_GCC >= 60000
#pragma GCC diagnostic push
// ignoring attributes on template argument X - this warning is because we need to pass storage_type as a template argument; no problem in this case
#pragma GCC diagnostic ignored "-Wignored-attributes"
#endif

namespace boost {
namespace atomics {
namespace detail {

//! Negate implementation
template<
    typename Base,
    typename Value,
    std::size_t Size
#if defined(BOOST_ATOMIC_DETAIL_INT_FP_ENDIAN_MATCH)
    , bool = atomics::detail::is_iec559< Value >::value && atomics::detail::is_integral< typename Base::storage_type >::value
#endif
>
struct extra_fp_negate_generic :
    public Base
{
    typedef Base base_type;
    typedef typename base_type::storage_type storage_type;
    typedef Value value_type;

static BOOST_FORCEINLINE value_type fetch_negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
    {
        storage_type old_storage, new_storage;
        value_type old_val, new_val;
        atomics::detail::non_atomic_load(storage, old_storage);
        do
        {
            old_val = atomics::detail::bitwise_fp_cast< value_type >(old_storage);
            new_val = -old_val;
            new_storage = atomics::detail::bitwise_fp_cast< storage_type >(new_val);
        }
        while (!base_type::compare_exchange_weak(storage, old_storage, new_storage, order, memory_order_relaxed));
        return old_val;
    }

static BOOST_FORCEINLINE value_type negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
    {
        storage_type old_storage, new_storage;
        value_type old_val, new_val;
        atomics::detail::non_atomic_load(storage, old_storage);
        do
        {
            old_val = atomics::detail::bitwise_fp_cast< value_type >(old_storage);
            new_val = -old_val;
            new_storage = atomics::detail::bitwise_fp_cast< storage_type >(new_val);
        }
        while (!base_type::compare_exchange_weak(storage, old_storage, new_storage, order, memory_order_relaxed));
        return new_val;
    }

static BOOST_FORCEINLINE void opaque_negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
    {
        fetch_negate(storage, order);
    }
};

#if defined(BOOST_ATOMIC_DETAIL_INT_FP_ENDIAN_MATCH)

//! Negate implementation for IEEE 754 / IEC 559 floating point types. We leverage the fact that the sign bit is the most significant bit in the value.
template< typename Base, typename Value, std::size_t Size >
struct extra_fp_negate_generic< Base, Value, Size, true > :
    public Base
{
    typedef Base base_type;
    typedef typename base_type::storage_type storage_type;
    typedef Value value_type;

//! The mask with only one sign bit set to 1
    static BOOST_CONSTEXPR_OR_CONST storage_type sign_mask = static_cast< storage_type >(1u) << (atomics::detail::value_sizeof< value_type >::value * 8u - 1u);

static BOOST_FORCEINLINE value_type fetch_negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
    {
        return atomics::detail::bitwise_fp_cast< value_type >(base_type::fetch_xor(storage, sign_mask, order));
    }

static BOOST_FORCEINLINE value_type negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
    {
        return atomics::detail::bitwise_fp_cast< value_type >(base_type::bitwise_xor(storage, sign_mask, order));
    }

static BOOST_FORCEINLINE void opaque_negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
    {
        base_type::opaque_xor(storage, sign_mask, order);
    }
};

#endif // defined(BOOST_ATOMIC_DETAIL_INT_FP_ENDIAN_MATCH)

//! Generic implementation of floating point operations
template< typename Base, typename Value, std::size_t Size >
struct extra_fp_operations_generic :
    public extra_fp_negate_generic< Base, Value, Size >
{
    typedef extra_fp_negate_generic< Base, Value, Size > base_type;
    typedef typename base_type::storage_type storage_type;
    typedef Value value_type;

static BOOST_FORCEINLINE value_type add(storage_type volatile& storage, value_type v, memory_order order) BOOST_NOEXCEPT
    {
        storage_type old_storage, new_storage;
        value_type old_val, new_val;
        atomics::detail::non_atomic_load(storage, old_storage);
        do
        {
            old_val = atomics::detail::bitwise_fp_cast< value_type >(old_storage);
            new_val = old_val + v;
            new_storage = atomics::detail::bitwise_fp_cast< storage_type >(new_val);
        }
        while (!base_type::compare_exchange_weak(storage, old_storage, new_storage, order, memory_order_relaxed));
        return new_val;
    }

static BOOST_FORCEINLINE value_type sub(storage_type volatile& storage, value_type v, memory_order order) BOOST_NOEXCEPT
    {
        storage_type old_storage, new_storage;
        value_type old_val, new_val;
        atomics::detail::non_atomic_load(storage, old_storage);
        do
        {
            old_val = atomics::detail::bitwise_fp_cast< value_type >(old_storage);
            new_val = old_val - v;
            new_storage = atomics::detail::bitwise_fp_cast< storage_type >(new_val);
        }
        while (!base_type::compare_exchange_weak(storage, old_storage, new_storage, order, memory_order_relaxed));
        return new_val;
    }

static BOOST_FORCEINLINE void opaque_add(storage_type volatile& storage, value_type v, memory_order order) BOOST_NOEXCEPT
    {
        base_type::fetch_add(storage, v, order);
    }

static BOOST_FORCEINLINE void opaque_sub(storage_type volatile& storage, value_type v, memory_order order) BOOST_NOEXCEPT
    {
        base_type::fetch_sub(storage, v, order);
    }
};

// Default extra_fp_operations template definition will be used unless specialized for a specific platform
template< typename Base, typename Value, std::size_t Size >
struct extra_fp_operations< Base, Value, Size, true > :
    public extra_fp_operations_generic< Base, Value, Size >
{
};

} // namespace detail
} // namespace atomics
} // namespace boost

#if defined(BOOST_GCC) && BOOST_GCC >= 60000
#pragma GCC diagnostic pop
#endif

#include <boost/atomic/detail/footer.hpp>

#endif // BOOST_ATOMIC_DETAIL_FP_OPS_GENERIC_HPP_INCLUDED_

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