On Tue, 21 Jun 2022 at 06:39, Alexandre Oliva via Libstdc++
<libstd...@gcc.gnu.org> wrote:
>
>
> In case we need to supplement the C standard library with additional
> definitions for float and long double, the declarations expected to be
> in the C headers may not be there. Rely on the cmath overloads
> instead.
>
> Regstrapped on x86_64-linux-gnu, also tested with a cross to
> aarch64-rtems6. Ok to install?
OK
>
>
> for libstdc++-v3/ChangeLog
>
> * testsuite/20_util/to_chars/long_double.cc: Use cmath
> long double overloads for nexttoward and ldexp.
> ---
> .../testsuite/20_util/to_chars/long_double.cc | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/libstdc++-v3/testsuite/20_util/to_chars/long_double.cc
> b/libstdc++-v3/testsuite/20_util/to_chars/long_double.cc
> index 0b1c2c2936fdc..498388110b179 100644
> --- a/libstdc++-v3/testsuite/20_util/to_chars/long_double.cc
> +++ b/libstdc++-v3/testsuite/20_util/to_chars/long_double.cc
> @@ -54,11 +54,11 @@ namespace detail
> {
> long double
> nextupl(long double x)
> - { return nexttowardl(x, numeric_limits<long double>::infinity()); }
> + { return nexttoward(x, numeric_limits<long double>::infinity()); }
>
> long double
> nextdownl(long double x)
> - { return nexttowardl(x, -numeric_limits<long double>::infinity()); }
> + { return nexttoward(x, -numeric_limits<long double>::infinity()); }
> }
>
> // The long double overloads of std::to_chars currently just go through
> printf
> @@ -138,7 +138,7 @@ test01()
> for (int exponent : {-11000, -3000, -300, -50, -7, 0, 7, 50, 300, 3000,
> 11000})
> for (long double testcase : hex_testcases)
> {
> - testcase = ldexpl(testcase, exponent);
> + testcase = ldexp(testcase, exponent);
> if (testcase == 0.0L || isinf(testcase))
> continue;
>
>
> --
> Alexandre Oliva, happy hacker https://FSFLA.org/blogs/lxo/
> Free Software Activist GNU Toolchain Engineer
> Disinformation flourishes because many people care deeply about injustice
> but very few check the facts. Ask me about <https://stallmansupport.org>
>
