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https://github.com/libretro/bsnes-libretro.git
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03b06257d3
byuu says: This synchronizes bsnes/higan with many recent internal nall changes. This will be the last WIP until I am situated in Japan. Apologies for the bugfixes that didn't get applied yet, I ran out of time.
90 lines
2.1 KiB
C++
90 lines
2.1 KiB
C++
#pragma once
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//multi-precision arithmetic
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//warning: each size is quadratically more expensive than the size before it!
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#include <nall/stdint.hpp>
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#include <nall/string.hpp>
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#include <nall/range.hpp>
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#include <nall/traits.hpp>
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#include <nall/arithmetic/unsigned.hpp>
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namespace nall {
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template<uint Bits> struct ArithmeticNatural;
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template<> struct ArithmeticNatural< 8> { using type = uint8_t; };
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template<> struct ArithmeticNatural< 16> { using type = uint16_t; };
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template<> struct ArithmeticNatural< 32> { using type = uint32_t; };
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template<> struct ArithmeticNatural< 64> { using type = uint64_t; };
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#if INTMAX_BITS >= 128
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template<> struct ArithmeticNatural<128> { using type = uint128_t; };
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#endif
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}
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#if INTMAX_BITS < 128
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#define PairBits 128
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#define TypeBits 64
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#define HalfBits 32
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#include <nall/arithmetic/natural.hpp>
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#undef PairBits
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#undef TypeBits
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#undef HalfBits
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#endif
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#define PairBits 256
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#define TypeBits 128
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#define HalfBits 64
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#include <nall/arithmetic/natural.hpp>
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#undef PairBits
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#undef TypeBits
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#undef HalfBits
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#define PairBits 512
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#define TypeBits 256
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#define HalfBits 128
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#include <nall/arithmetic/natural.hpp>
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#undef PairBits
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#undef TypeBits
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#undef HalfBits
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#define PairBits 1024
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#define TypeBits 512
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#define HalfBits 256
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#include <nall/arithmetic/natural.hpp>
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#undef PairBits
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#undef TypeBits
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#undef HalfBits
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#define PairBits 2048
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#define TypeBits 1024
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#define HalfBits 512
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#include <nall/arithmetic/natural.hpp>
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#undef PairBits
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#undef TypeBits
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#undef HalfBits
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#define PairBits 4096
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#define TypeBits 2048
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#define HalfBits 1024
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#include <nall/arithmetic/natural.hpp>
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#undef PairBits
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#undef TypeBits
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#undef HalfBits
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#define PairBits 8192
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#define TypeBits 4096
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#define HalfBits 2048
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#include <nall/arithmetic/natural.hpp>
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#undef PairBits
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#undef TypeBits
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#undef HalfBits
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namespace nall {
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//TODO: these types are for expressing smaller bit ranges in class interfaces
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//for instance, XChaCha20 taking a 192-bit nonce
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//however, they still allow more bits than expressed ...
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//some sort of wrapper needs to be devised to ensure these sizes are masked and wrap appropriately
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using uint192_t = uint256_t;
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}
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