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| author | Jonathan Wakely <jwakely@redhat.com> | 2022-11-16 20:47:39 +0000 |
|---|---|---|
| committer | Jonathan Wakely <jwakely@redhat.com> | 2022-11-17 00:34:42 +0000 |
| commit | f69a8299c1d95548e1539227fb7b8f5581aeb29b (patch) | |
| tree | 630b7bd6f9dae3836c246b3a63b0e5ece804ca49 | |
| parent | 80909529c9a2fc0aa0ccc285da2c9cc233c04aa7 (diff) | |
| download | gcc-f69a8299c1d95548e1539227fb7b8f5581aeb29b.zip gcc-f69a8299c1d95548e1539227fb7b8f5581aeb29b.tar.gz gcc-f69a8299c1d95548e1539227fb7b8f5581aeb29b.tar.bz2 | |
libstdc++: Ensure std::to_chars overloads all declared in <format> [PR107720]
For powerpc64le we need to be able to format both of __ieee128 and
__ibm128, so we need the std::to_chars overloads for both types to be
visible at once. The __ieee128 overloads are always visible in C++23
mode, because they're used to implement the _Float128 overloads. The
__ibm128 overloads are only visible when long double is __ibm128.
libstdc++-v3/ChangeLog:
PR libstdc++/107720
* include/std/format [_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT]:
Declare overloads of std::to_chars for the alternative long
double type.
| -rw-r--r-- | libstdc++-v3/include/std/format | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/libstdc++-v3/include/std/format b/libstdc++-v3/include/std/format index 1afcd04..f4fc85a 100644 --- a/libstdc++-v3/include/std/format +++ b/libstdc++-v3/include/std/format @@ -1237,6 +1237,34 @@ namespace __format using __float128_t = __ieee128; # define _GLIBCXX_FORMAT_F128 1 +#ifdef __LONG_DOUBLE_IEEE128__ + // These overloads exist in the library, but are not declared. + // Make them available as std::__format::to_chars. + to_chars_result + to_chars(char*, char*, __ibm128) noexcept + __asm("_ZSt8to_charsPcS_e"); + + to_chars_result + to_chars(char*, char*, __ibm128, chars_format) noexcept + __asm("_ZSt8to_charsPcS_eSt12chars_format"); + + to_chars_result + to_chars(char*, char*, __ibm128, chars_format, int) noexcept + __asm("_ZSt8to_charsPcS_eSt12chars_formati"); +#elif __cplusplus == 202002L + to_chars_result + to_chars(char*, char*, __ieee128) noexcept + __asm("_ZSt8to_charsPcS_u9__ieee128"); + + to_chars_result + to_chars(char*, char*, __ieee128, chars_format) noexcept + __asm("_ZSt8to_charsPcS_u9__ieee128St12chars_format"); + + to_chars_result + to_chars(char*, char*, __ieee128, chars_format, int) noexcept + __asm("_ZSt8to_charsPcS_u9__ieee128St12chars_formati"); +#endif + #elif defined _GLIBCXX_LDOUBLE_IS_IEEE_BINARY128 // Format 128-bit floating-point types using long double. |