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| author | Steffen Rusitschka <rusi@gmx.de> | 2022-11-25 18:15:55 +0100 |
|---|---|---|
| committer | Linus Groh <mail@linusgroh.de> | 2022-12-02 16:22:51 +0100 |
| commit | 1aa07d7328a4f1eaee0ac773429090e1963d22fd (patch) | |
| tree | ae8342f7434c48cc0ee58dc43ddf9eeeb1cde478 /AK/FloatingPoint.h | |
| parent | 2e806dab0713d229e0f580b6e5e5960f113e7c2e (diff) | |
| download | serenity-1aa07d7328a4f1eaee0ac773429090e1963d22fd.zip | |
AK: Implement FloatExtractor<f128>
This patch adds support for 128-bit floating points in FloatExtractor.
This is required to build SerenityOS on MacOS/aarch64. It might break
building for Raspberry Pi.
Diffstat (limited to 'AK/FloatingPoint.h')
| -rw-r--r-- | AK/FloatingPoint.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/AK/FloatingPoint.h b/AK/FloatingPoint.h index eeca5ea6b6..fea42d575c 100644 --- a/AK/FloatingPoint.h +++ b/AK/FloatingPoint.h @@ -15,6 +15,26 @@ namespace AK { template<typename T> union FloatExtractor; +#ifdef AK_HAS_FLOAT_128 +template<> +union FloatExtractor<f128> { + static constexpr int mantissa_bits = 112; + static constexpr unsigned __int128 mantissa_max = (((unsigned __int128)1) << 112) - 1; + static constexpr int exponent_bias = 16383; + static constexpr int exponent_bits = 15; + static constexpr unsigned exponent_max = 32767; + struct { + unsigned __int128 mantissa : 112; + unsigned exponent : 15; + unsigned sign : 1; + }; + f128 d; +}; +// Validate that f128 and the FloatExtractor union are 128 bits. +static_assert(sizeof(f128) == 16); +static_assert(sizeof(FloatExtractor<f128>) == 16); +#endif + #ifdef AK_HAS_FLOAT_80 template<> union FloatExtractor<f80> { |