From 59fb676e401fc67b72b92aa8f232e996e5f65664 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Sat, 16 Nov 2024 03:34:17 +0200
Subject: [PATCH] Remove detail/reverse.hpp

---
 include/boost/hash2/detail/reverse.hpp | 105 -------------------------
 test/Jamfile                           |   1 -
 test/detail_reverse.cpp                |  40 ----------
 3 files changed, 146 deletions(-)
 delete mode 100644 include/boost/hash2/detail/reverse.hpp
 delete mode 100644 test/detail_reverse.cpp

diff --git a/include/boost/hash2/detail/reverse.hpp b/include/boost/hash2/detail/reverse.hpp
deleted file mode 100644
index bfab480..0000000
--- a/include/boost/hash2/detail/reverse.hpp
+++ /dev/null
@@ -1,105 +0,0 @@
-#ifndef BOOST_HASH2_DETAIL_REVERSE_HPP_INCLUDED
-#define BOOST_HASH2_DETAIL_REVERSE_HPP_INCLUDED
-
-// Copyright 2024 Peter Dimov.
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-
-#include <cstdint>
-#include <cstring>
-#include <cstdlib>
-
-namespace boost
-{
-namespace hash2
-{
-namespace detail
-{
-
-template<std::size_t N> void reverse( unsigned char (&d)[ N ], void const* s )
-{
-    unsigned char const* s2 = static_cast<unsigned char const*>( s );
-
-    for( std::size_t i = 0; i < N; ++i )
-    {
-        d[ i ] = s2[ N-1-i ];
-    }
-}
-
-#if defined(__GNUC__) || defined(__clang__)
-
-inline void reverse( unsigned char (&d)[ 2 ], void const* s )
-{
-    std::uint16_t tmp;
-    std::memcpy( &tmp, s, 2 );
-    tmp = __builtin_bswap16( tmp );
-    std::memcpy( d, &tmp, 2 );
-}
-
-inline void reverse( unsigned char (&d)[ 4 ], void const* s )
-{
-    std::uint32_t tmp;
-    std::memcpy( &tmp, s, 4 );
-    tmp = __builtin_bswap32( tmp );
-    std::memcpy( d, &tmp, 4 );
-}
-
-inline void reverse( unsigned char (&d)[ 8 ], void const* s )
-{
-    std::uint64_t tmp;
-    std::memcpy( &tmp, s, 8 );
-    tmp = __builtin_bswap64( tmp );
-    std::memcpy( d, &tmp, 8 );
-}
-
-inline void reverse( unsigned char (&d)[ 16 ], void const* s )
-{
-    std::uint64_t tmp[ 2 ];
-    std::memcpy( tmp, s, 16 );
-
-    std::uint64_t tmp2[ 2 ] = { __builtin_bswap64( tmp[1] ), __builtin_bswap64( tmp[0] ) };
-    std::memcpy( d, tmp2, 16 );
-}
-
-#elif defined(_MSC_VER)
-
-inline void reverse( unsigned char (&d)[ 2 ], void const* s )
-{
-    unsigned short tmp;
-    std::memcpy( &tmp, s, 2 );
-    tmp = _byteswap_ushort( tmp );
-    std::memcpy( d, &tmp, 2 );
-}
-
-inline void reverse( unsigned char (&d)[ 4 ], void const* s )
-{
-    unsigned long tmp;
-    std::memcpy( &tmp, s, 4 );
-    tmp = _byteswap_ulong( tmp );
-    std::memcpy( d, &tmp, 4 );
-}
-
-inline void reverse( unsigned char (&d)[ 8 ], void const* s )
-{
-    unsigned long long tmp;
-    std::memcpy( &tmp, s, 8 );
-    tmp = _byteswap_uint64( tmp );
-    std::memcpy( d, &tmp, 8 );
-}
-
-inline void reverse( unsigned char (&d)[ 16 ], void const* s )
-{
-    unsigned long long tmp[ 2 ];
-    std::memcpy( tmp, s, 16 );
-
-    unsigned long long tmp2[ 2 ] = { _byteswap_uint64( tmp[1] ), _byteswap_uint64( tmp[0] ) };
-    std::memcpy( d, tmp2, 16 );
-}
-
-#endif
-
-} // namespace detail
-} // namespace hash2
-} // namespace boost
-
-#endif // #ifndef BOOST_HASH2_DETAIL_REVERSE_HPP_INCLUDED
diff --git a/test/Jamfile b/test/Jamfile
index 166a3b3..b7036d1 100644
--- a/test/Jamfile
+++ b/test/Jamfile
@@ -41,7 +41,6 @@ run detail_read.cpp ;
 run detail_write.cpp ;
 run detail_write_2.cpp ;
 run detail_rot.cpp ;
-run detail_reverse.cpp ;
 run detail_has_tag_invoke.cpp ;
 
 # hash_append
diff --git a/test/detail_reverse.cpp b/test/detail_reverse.cpp
deleted file mode 100644
index 93f252e..0000000
--- a/test/detail_reverse.cpp
+++ /dev/null
@@ -1,40 +0,0 @@
-// Copyright 2024 Peter Dimov.
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-
-#include <boost/hash2/detail/reverse.hpp>
-#include <boost/core/lightweight_test.hpp>
-
-template<std::size_t N> void test()
-{
-    unsigned char v[ N ] = {};
-    for( std::size_t i = 0; i < N; ++i ) v[ i ] = static_cast<unsigned char>( i + 1 );
-
-    unsigned char w[ N ] = {};
-    boost::hash2::detail::reverse( w, v );
-
-    for( std::size_t i = 0; i < N; ++i ) BOOST_TEST_EQ( w[ i ], v[ N - 1 - i ] );
-}
-
-int main()
-{
-    test<1>();
-    test<2>();
-    test<3>();
-    test<4>();
-    test<5>();
-    test<6>();
-    test<7>();
-    test<8>();
-    test<9>();
-    test<10>();
-    test<11>();
-    test<12>();
-    test<13>();
-    test<14>();
-    test<15>();
-    test<16>();
-    test<17>();
-
-    return boost::report_errors();
-}