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Add 128-bit operations to bigint

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This commit is contained in:
Victor Zverovich
2022-04-02 07:40:52 -07:00
parent ef54f9aa38
commit b4dc7a1d34
3 changed files with 113 additions and 83 deletions
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19
include/fmt/format.h
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@@ -339,6 +339,10 @@ class uint128_fallback {
const uint128_fallback& rhs) -> bool {
return !(lhs == rhs);
}
friend auto operator>(const uint128_fallback& lhs,
const uint128_fallback& rhs) -> bool {
return lhs.hi_ != rhs.hi_ ? lhs.hi_ > rhs.hi_ : lhs.lo_ > rhs.lo_;
}
friend auto operator|(const uint128_fallback& lhs,
const uint128_fallback& rhs) -> uint128_fallback {
return {lhs.hi_ | rhs.hi_, lhs.lo_ | rhs.lo_};
@@ -347,6 +351,16 @@ class uint128_fallback {
const uint128_fallback& rhs) -> uint128_fallback {
return {lhs.hi_ & rhs.hi_, lhs.lo_ & rhs.lo_};
}
friend auto operator+(const uint128_fallback& lhs,
const uint128_fallback& rhs) -> uint128_fallback {
auto result = uint128_fallback(lhs);
result += rhs;
return result;
}
friend auto operator*(const uint128_fallback&, uint32_t) -> uint128_fallback {
FMT_ASSERT(false, "");
return {};
}
friend auto operator-(const uint128_fallback& lhs, uint64_t rhs)
-> uint128_fallback {
FMT_ASSERT(lhs.lo_ >= rhs, "");
@@ -973,10 +987,9 @@ template <typename T>
using uint32_or_64_or_128_t =
conditional_t<num_bits<T>() <= 32 && !FMT_REDUCE_INT_INSTANTIATIONS,
uint32_t,
conditional_t<num_bits<T>() <= 64, uint64_t, uint128_opt>>;
conditional_t<num_bits<T>() <= 64, uint64_t, uint128_t>>;
template <typename T>
using uint64_or_128_t =
conditional_t<num_bits<T>() <= 64, uint64_t, uint128_opt>;
using uint64_or_128_t = conditional_t<num_bits<T>() <= 64, uint64_t, uint128_t>;
#define FMT_POWERS_OF_10(factor) \
factor * 10, (factor)*100, (factor)*1000, (factor)*10000, (factor)*100000, \