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Accept 80-bit long double in <complex> #1316

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Merged
StephanTLavavej merged 2 commits into from
Sep 25, 2020
Merged

Accept 80-bit long double in <complex> #1316

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6347c09
The new _Bit_cast function does not allow 80 bits wide long double. …
simmse Sep 24, 2020
3c331ac
Remove parentheses, add preprocessor comments.
StephanTLavavej Sep 25, 2020
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8 changes: 8 additions & 0 deletions stl/inc/complex
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Original file line number Diff line number Diff line change
Expand Up @@ -223,13 +223,21 @@ public:
}

static bool _Isinf(_Ty _Left) { // test for infinity
#if defined(__INTEL_COMPILER) && defined(__LONG_DOUBLE_SIZE__) && __LONG_DOUBLE_SIZE__ == 80
return _CSTD _LDtest(&_Left) == _INFCODE;
#else // ^^^ 80-bit long double (not supported by MSVC in general, see GH-1316) / 64-bit long double vvv
const auto _Uint = _Bit_cast<uint64_t>(_Left);
return (_Uint & 0x7fffffffffffffffU) == 0x7ff0000000000000U;
#endif // ^^^ 64-bit long double ^^^
}

static _CONSTEXPR20 bool _Isnan(_Ty _Left) {
#if defined(__INTEL_COMPILER) && defined(__LONG_DOUBLE_SIZE__) && __LONG_DOUBLE_SIZE__ == 80
return _CSTD _LDtest(&_Left) == _NANCODE;
#else // ^^^ 80-bit long double (not supported by MSVC in general, see GH-1316) / 64-bit long double vvv
const auto _Uint = _Bit_cast<uint64_t>(_Left);
return (_Uint & 0x7fffffffffffffffU) > 0x7ff0000000000000U;
#endif // ^^^ 64-bit long double ^^^
}

static constexpr _Ty _Nanv() { // return NaN
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