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AK: Implement FloatExtractor<f128>

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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.
This commit is contained in:
Steffen Rusitschka 2022-11-25 18:15:55 +01:00 • committed by Linus Groh
parent 2e806dab07
commit 1aa07d7328
3 changed files with 39 additions and 1 deletions
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20
AK/FloatingPoint.h
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@ -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> {