804b7cc438
This adds the integral overloads of std::to_chars and std::from_chars, including the changes made by P0682R0. Support for floating point types is absent. * include/Makefile.am: Add new <charconv> header. * include/Makefile.in: Regenerate. * include/precompiled/stdc++.h: Include <charconv>. * include/std/charconv: New file. (to_chars_result, to_chars, from_chars_result, from_chars): Define. * testsuite/20_util/from_chars/1.cc: New test. * testsuite/20_util/from_chars/1_neg.cc: New test. * testsuite/20_util/from_chars/2.cc: New test. * testsuite/20_util/from_chars/requirements.cc: New test. * testsuite/20_util/to_chars/1.cc: New test. * testsuite/20_util/to_chars/1_neg.cc: New test. * testsuite/20_util/to_chars/2.cc: New test. * testsuite/20_util/to_chars/requirements.cc: New test. From-SVN: r253353
79 lines
2.3 KiB
C++
79 lines
2.3 KiB
C++
// Copyright (C) 2017 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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// { dg-options "-std=gnu++17" }
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// { dg-do run { target c++17 } }
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#include <charconv>
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#include <testsuite_hooks.h>
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// Test std::to_chars error handling.
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void
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test01()
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{
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char buf[9] = "********";
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std::to_chars_result r;
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r = std::to_chars(buf, buf, 1);
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VERIFY( r.ec == std::errc::value_too_large );
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VERIFY( r.ptr == buf );
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VERIFY( *r.ptr == '*' );
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r = std::to_chars(buf, buf + 3, 0b1000, 2);
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VERIFY( r.ec == std::errc::value_too_large );
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VERIFY( r.ptr == buf + 3 );
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VERIFY( *r.ptr == '*' );
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r = std::to_chars(buf, buf + 4, 0b1000, 2);
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VERIFY( r.ec == std::errc{} );
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VERIFY( r.ptr == buf + 4 );
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VERIFY( *r.ptr == '*' );
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r = std::to_chars(buf, buf + 4, 010000, 8);
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VERIFY( r.ec == std::errc::value_too_large );
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VERIFY( r.ptr == buf + 4 );
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VERIFY( *r.ptr == '*' );
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r = std::to_chars(buf, buf + 5, 010000, 8);
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VERIFY( r.ec == std::errc{} );
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VERIFY( r.ptr == buf + 5 );
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VERIFY( *r.ptr == '*' );
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r = std::to_chars(buf, buf + 5, 100000, 10);
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VERIFY( r.ec == std::errc::value_too_large );
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VERIFY( r.ptr == buf + 5 );
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VERIFY( *r.ptr == '*' );
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r = std::to_chars(buf, buf + 6, 100000, 10);
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VERIFY( r.ec == std::errc{} );
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VERIFY( r.ptr == buf + 6 );
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VERIFY( *r.ptr == '*' );
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r = std::to_chars(buf, buf + 6, 0x1000000, 16);
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VERIFY( r.ec == std::errc::value_too_large );
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VERIFY( r.ptr == buf + 6 );
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VERIFY( *r.ptr == '*' );
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r = std::to_chars(buf, buf + 7, 0x1000000, 16);
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VERIFY( r.ec == std::errc{} );
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VERIFY( r.ptr == buf + 7 );
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VERIFY( *r.ptr == '*' );
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}
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int
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main()
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{
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test01();
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}
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