9866abe31e
Implement this change for C++20 that was just approved in Prague. P1956R1 On the names of low-level bit manipulation functions * include/bits/hashtable_policy.h: Update comment. * include/std/bit (__ispow2, __ceil2, __floor2, __log2p1): Rename. (ispow2, ceil2, floor2, log2p1): Likewise. (__cpp_lib_int_pow2): Add feature test macro. * include/std/charconv (__to_chars_len_2): Adjust use of __log2p1. * include/std/memory (assume_aligned): Adjust use of ispow2. * include/std/version (__cpp_lib_int_pow2): Add. * libsupc++/new_opa.cc: Adjust use of __ispow2. * src/c++17/memory_resource.cc: Likewise, and for __ceil2 and __log2p1. * testsuite/17_intro/freestanding.cc: Adjust use of ispow2. * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Rename to ... * testsuite/26_numerics/bit/bit.pow.two/bit_ceil.cc: ... here. * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: Rename to ... * testsuite/26_numerics/bit/bit.pow.two/bit_ceil_neg.cc: ... here. * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Rename to ... * testsuite/26_numerics/bit/bit.pow.two/bit_floor.cc: ... here. * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Rename to ... * testsuite/26_numerics/bit/bit.pow.two/bit_width.cc: ... here. * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Rename to ... * testsuite/26_numerics/bit/bit.pow.two/has_single_bit.cc: ... here.
61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
// { dg-options "-lsupc++ -fvtable-verify=none" }
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// { dg-do run { target c++11 } }
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// Copyright (C) 2010-2020 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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#include <cstdarg>
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#include <cstddef>
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#include <cstdlib>
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#include <exception>
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#include <limits>
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#include <new>
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#include <typeinfo>
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#include <initializer_list>
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#include <type_traits>
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// C++2a headers:
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#include <bit>
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#include <version>
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int main()
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{
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std::exception e;
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const char* str __attribute__((unused)) = typeid(e).name();
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typedef std::numeric_limits<long> limit_type;
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limit_type limit_l __attribute__((unused));
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int r __attribute__((unused)) = limit_type::radix;
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const char* cp = new char;
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delete cp;
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bool b __attribute__((unused)) = std::is_integral<int>::value;
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std::initializer_list<int> ilisti __attribute__((unused));
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#if __cplusplus > 201703L
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static_assert( std::has_single_bit(256u) );
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static_assert( __cpp_lib_void_t >= 201411L );
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#endif
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return 0;
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}
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