diff options
Diffstat (limited to 'libstdc++-v3/testsuite/20_util')
| -rw-r--r-- | libstdc++-v3/testsuite/20_util/from_chars/pr107468.cc | 42 | ||||
| -rw-r--r-- | libstdc++-v3/testsuite/20_util/to_chars/float128_c++23.cc | 105 |
2 files changed, 147 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/20_util/from_chars/pr107468.cc b/libstdc++-v3/testsuite/20_util/from_chars/pr107468.cc new file mode 100644 index 0000000..95bf669 --- /dev/null +++ b/libstdc++-v3/testsuite/20_util/from_chars/pr107468.cc @@ -0,0 +1,42 @@ +// Copyright (C) 2022 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 3, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING3. If not see +// <http://www.gnu.org/licenses/>. + +// { dg-do run { target c++17 } } +// { dg-add-options ieee } + +#include <charconv> +#include <string> +#include <cfenv> +#include <testsuite_hooks.h> + +int +main() +{ + // FP from_char not available otherwise. +#if __cpp_lib_to_chars >= 201611L \ + && _GLIBCXX_USE_C99_FENV_TR1 \ + && defined(FE_DOWNWARD) \ + && defined(_GLIBCXX_FLOAT_IS_IEEE_BINARY32) + // PR libstdc++/107468 + float f; + char buf[] = "3.355447e+07"; + std::fesetround(FE_DOWNWARD); + auto [ptr, ec] = std::from_chars(buf, buf + sizeof(buf) - 1, f, std::chars_format::scientific); + VERIFY( ec == std::errc() && ptr == buf + sizeof(buf) - 1 ); + VERIFY( f == 33554472.0f ); +#endif +} diff --git a/libstdc++-v3/testsuite/20_util/to_chars/float128_c++23.cc b/libstdc++-v3/testsuite/20_util/to_chars/float128_c++23.cc new file mode 100644 index 0000000..28824c9 --- /dev/null +++ b/libstdc++-v3/testsuite/20_util/to_chars/float128_c++23.cc @@ -0,0 +1,105 @@ +// Copyright (C) 2022 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 3, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING3. If not see +// <http://www.gnu.org/licenses/>. + +// { dg-options "-std=gnu++2b" } +// { dg-do run { target c++23 } } +// { dg-require-effective-target ieee_floats } +// { dg-require-effective-target size32plus } +// { dg-add-options ieee } + +#include <charconv> +#include <stdfloat> +#include <limits> +#include <numbers> +#include <testsuite_hooks.h> + +#if defined(__STDCPP_FLOAT128_T__) \ + && (defined(_GLIBCXX_LDOUBLE_IS_IEEE_BINARY128) \ + || defined(_GLIBCXX_HAVE_FLOAT128_MATH)) +void +test(std::chars_format fmt = std::chars_format{}) +{ + std::float128_t tests[] = { + std::numeric_limits<std::float128_t>::denorm_min(), + std::numeric_limits<std::float128_t>::min(), + 0.0f128, + -42.0f128, + 1234.5678912345f128, + std::numbers::e_v<std::float128_t>, + std::numbers::log2e_v<std::float128_t>, + std::numbers::log10e_v<std::float128_t>, + std::numbers::pi_v<std::float128_t>, + std::numbers::inv_pi_v<std::float128_t>, + std::numbers::inv_sqrtpi_v<std::float128_t>, + std::numbers::ln2_v<std::float128_t>, + std::numbers::ln10_v<std::float128_t>, + std::numbers::sqrt2_v<std::float128_t>, + std::numbers::sqrt3_v<std::float128_t>, + std::numbers::inv_sqrt3_v<std::float128_t>, + std::numbers::egamma_v<std::float128_t>, + std::numbers::phi_v<std::float128_t>, + std::numeric_limits<std::float128_t>::max() + }; + char str1[10000], str2[10000]; + for (auto u : tests) + { + auto [ptr1, ec1] = std::to_chars(str1, str1 + sizeof(str1), u, fmt); + VERIFY( ec1 == std::errc() ); +// std::cout << i << ' ' << std::string_view (str1, ptr1) << '\n'; + if (fmt == std::chars_format::fixed) + { + auto [ptr2, ec2] = std::to_chars(str2, str2 + (ptr1 - str1), u, fmt); + VERIFY( ec2 == std::errc() && ptr2 - str2 == ptr1 - str1 ); + auto [ptr3, ec3] = std::to_chars(str2, str2 + (ptr1 - str1 - 1), u, fmt); + VERIFY( ec3 != std::errc() ); + } + std::float128_t v; + auto [ptr4, ec4] = std::from_chars(str1, ptr1, v, + fmt == std::chars_format{} + ? std::chars_format::general : fmt); + VERIFY( ec4 == std::errc() && ptr4 == ptr1 ); + VERIFY( u == v ); + + auto [ptr5, ec5] = std::to_chars(str1, str1 + sizeof(str1), u, fmt, 90); + VERIFY( ec5 == std::errc() ); +// std::cout << i << ' ' << std::string_view (str1, ptr5) << '\n'; + v = 4.0f128; + auto [ptr6, ec6] = std::from_chars(str1, ptr5, v, + fmt == std::chars_format{} + ? std::chars_format::general : fmt); + VERIFY( ec6 == std::errc() && ptr6 == ptr5 ); + if (fmt == std::chars_format::fixed && u > 0.0f128 && u < 0.000001f128) + VERIFY( v == 0.0 ); + else + VERIFY( u == v ); + } +} +#endif + +int +main() +{ +#if defined(__STDCPP_FLOAT128_T__) \ + && (defined(_GLIBCXX_LDOUBLE_IS_IEEE_BINARY128) \ + || defined(_GLIBCXX_HAVE_FLOAT128_MATH)) + test(); + test(std::chars_format::fixed); + test(std::chars_format::scientific); + test(std::chars_format::general); + test(std::chars_format::hex); +#endif +} |