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Update to v106r65 release.

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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.
This commit is contained in:
Tim Allen
2018-10-04 20:11:23 +10:00
parent 336d20123f
commit 03b06257d3
75 changed files with 2242 additions and 1371 deletions
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25
nall/arithmetic/barrett.hpp
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@@ -2,20 +2,27 @@
namespace nall {
struct BarrettReduction {
BarrettReduction(uint256_t modulo) : modulo(modulo), factor((1_u1024 << 512) / modulo) {}
template<uint Bits> struct BarrettReduction {
using type = typename ArithmeticNatural<1 * Bits>::type;
using pair = typename ArithmeticNatural<2 * Bits>::type;
//return = value % modulo
inline auto operator()(uint512_t value) const -> uint256_t {
uint512_t hi, lo;
nall::mul(value, factor, hi, lo);
uint512_t remainder = value - hi * modulo;
explicit BarrettReduction(type modulo) : modulo(modulo), factor(pair(1) + -pair(modulo) / modulo) {}
//return => value % modulo
inline auto operator()(pair value) const -> type {
pair hi, lo;
mul(value, factor, hi, lo);
pair remainder = value - hi * modulo;
return remainder < modulo ? remainder : remainder - modulo;
}
private:
const uint512_t modulo;
const uint512_t factor;
const pair modulo;
const pair factor;
};
template<typename T, uint Bits> auto operator%(T value, const BarrettReduction<Bits>& modulo) {
return modulo(value);
}
}