diff options
| author | Andreas Schwab <schwab@suse.de> | 2024-09-02 10:43:20 +0200 |
|---|---|---|
| committer | Andreas Schwab <schwab@suse.de> | 2024-09-02 11:50:27 +0200 |
| commit | 4bf758b212170dba2b5a1881950e949ec4f8a58b (patch) | |
| tree | 81f24d5c14d7c4b81fa8de4a3bcb7f83e7ed3f84 | |
| parent | e4d3e7f9add34216f4baffd3124bcb22a82c39bf (diff) | |
| download | gcc-4bf758b212170dba2b5a1881950e949ec4f8a58b.zip gcc-4bf758b212170dba2b5a1881950e949ec4f8a58b.tar.gz gcc-4bf758b212170dba2b5a1881950e949ec4f8a58b.tar.bz2 | |
libsupc++: Fix handling of m68k extended real in <compare>
PR libstdc++/116513
* libsupc++/compare (_S_fp_bits) [__fmt == _M68k_80bit]: Shift
padding out of exponent word.
| -rw-r--r-- | libstdc++-v3/libsupc++/compare | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/libstdc++-v3/libsupc++/compare b/libstdc++-v3/libsupc++/compare index 686aa6d..63ad6b5 100644 --- a/libstdc++-v3/libsupc++/compare +++ b/libstdc++-v3/libsupc++/compare @@ -838,7 +838,7 @@ namespace std _GLIBCXX_VISIBILITY(default) using enum _Fp_fmt; #endif constexpr auto __fmt = _S_fp_fmt<_Tp>(); - if constexpr (__fmt == _X86_80bit || __fmt == _M68k_80bit) + if constexpr (__fmt == _X86_80bit) { if constexpr (sizeof(_Tp) == 3 * sizeof(int32_t)) { @@ -851,6 +851,11 @@ namespace std _GLIBCXX_VISIBILITY(default) return _Int<int16_t>(__ival._M_hi, __ival._M_lo); } } + else if constexpr (__fmt == _M68k_80bit) + { + auto __ival = __builtin_bit_cast(_Int<int32_t>, __val); + return _Int<int16_t>(__ival._M_hi >> 16, __ival._M_lo); + } else if constexpr (sizeof(_Tp) == 2 * sizeof(int64_t)) { #if __SIZEOF_INT128__ |