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types.hpp: implement min_v<>, max_v<>, SignedInt, UnsignedInt, FPInt concepts

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Restrict smax to only work with signed values for consistency.
Cleanup <climits> includes.
Cleanup <limits> includes.
This commit is contained in:
Nekotekina 2021-05-22 21:46:10 +03:00
parent 4b239a0b87
commit 2491aad6f2
48 changed files with 190 additions and 168 deletions
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143
rpcs3/util/types.hpp
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@ -505,141 +505,170 @@ struct get_int_impl<16>
using stype = s128;
};
enum class f16 : u16{};
using f32 = float;
using f64 = double;
template <typename T>
concept UnsignedInt = std::is_unsigned_v<std::common_type_t<T>> || std::is_same_v<std::common_type_t<T>, u128>;
template <typename T>
concept SignedInt = (std::is_signed_v<std::common_type_t<T>> && std::is_integral_v<std::common_type_t<T>>) || std::is_same_v<std::common_type_t<T>, s128>;
template <typename T>
concept FPInt = std::is_floating_point_v<std::common_type_t<T>> || std::is_same_v<std::common_type_t<T>, f16>;
template <typename T>
constexpr T min_v;
template <UnsignedInt T>
constexpr std::common_type_t<T> min_v<T> = 0;
template <SignedInt T>
constexpr std::common_type_t<T> min_v<T> = static_cast<std::common_type_t<T>>(-1) << (sizeof(std::common_type_t<T>) * 8 - 1);
template <>
constexpr inline f16 min_v<f16>{0xfbffu};
template <>
constexpr inline f32 min_v<f32> = std::bit_cast<f32, u32>(0xff'7fffffu);
template <>
constexpr inline f64 min_v<f64> = std::bit_cast<f64, u64>(0xffe'7ffff'ffffffffu);
template <FPInt T>
constexpr std::common_type_t<T> min_v<T> = min_v<std::common_type_t<T>>;
template <typename T>
constexpr T max_v;
template <UnsignedInt T>
constexpr std::common_type_t<T> max_v<T> = -1;
template <SignedInt T>
constexpr std::common_type_t<T> max_v<T> = static_cast<std::common_type_t<T>>(~min_v<T>);
template <>
constexpr inline f16 max_v<f16>{0x7bffu};
template <>
constexpr inline f32 max_v<f32> = std::bit_cast<f32, u32>(0x7f'7fffffu);
template <>
constexpr inline f64 max_v<f64> = std::bit_cast<f64, u64>(0x7fe'fffff'ffffffffu);
template <FPInt T>
constexpr std::common_type_t<T> max_v<T> = max_v<std::common_type_t<T>>;
// Return magic value for any unsigned type
constexpr struct umax_impl_t
{
template <typename T>
static constexpr T value = static_cast<T>(-1);
template <typename T, typename CT = std::common_type_t<T>> requires (std::is_unsigned_v<CT>) || (std::is_same_v<CT, u128>)
template <UnsignedInt T>
constexpr bool operator==(const T& rhs) const
{
return rhs == value<CT>;
return rhs == max_v<T>;
}
template <typename T, typename CT = std::common_type_t<T>> requires (std::is_unsigned_v<CT>) || (std::is_same_v<CT, u128>)
template <UnsignedInt T>
constexpr std::strong_ordering operator<=>(const T& rhs) const
{
return rhs == value<CT> ? std::strong_ordering::equal : std::strong_ordering::greater;
return rhs == max_v<T> ? std::strong_ordering::equal : std::strong_ordering::greater;
}
template <typename T, typename CT = std::common_type_t<T>> requires (std::is_unsigned_v<CT>) || (std::is_same_v<CT, u128>)
template <UnsignedInt T>
constexpr operator T() const
{
return value<CT>;
return max_v<T>;
}
} umax;
constexpr struct smin_impl_t
{
template <typename T>
static constexpr T value = static_cast<T>(-1) << (sizeof(T) * 8 - 1);
template <typename T, typename CT = std::common_type_t<T>> requires (std::is_signed_v<CT>) || (std::is_same_v<CT, s128>)
template <SignedInt T>
constexpr bool operator==(const T& rhs) const
{
return rhs == value<CT>;
return rhs == min_v<T>;
}
template <typename T, typename CT = std::common_type_t<T>> requires (std::is_signed_v<CT>) || (std::is_same_v<CT, s128>)
template <SignedInt T>
constexpr std::strong_ordering operator<=>(const T& rhs) const
{
return rhs == value<CT> ? std::strong_ordering::equal : std::strong_ordering::less;
return rhs == min_v<T> ? std::strong_ordering::equal : std::strong_ordering::less;
}
template <typename T, typename CT = std::common_type_t<T>> requires (std::is_signed_v<CT>) || (std::is_same_v<CT, s128>)
template <SignedInt T>
constexpr operator T() const
{
return value<CT>;
return min_v<T>;
}
} smin;
constexpr struct smax_impl_t
{
template <typename T>
static constexpr T value = static_cast<T>(~smin_impl_t::value<T>);
template <typename T, typename CT = std::common_type_t<T>> requires (std::is_integral_v<CT>) || (std::is_same_v<CT, s128>) || (std::is_same_v<CT, u128>)
template <SignedInt T>
constexpr bool operator==(const T& rhs) const
{
return rhs == value<CT>;
return rhs == max_v<T>;
}
template <typename T, typename CT = std::common_type_t<T>> requires (std::is_integral_v<CT>) || (std::is_same_v<CT, s128>) || (std::is_same_v<CT, u128>)
template <SignedInt T>
constexpr std::strong_ordering operator<=>(const T& rhs) const
{
if constexpr (std::is_signed_v<CT> || std::is_same_v<CT, s128>)
{
return rhs == value<CT> ? std::strong_ordering::equal : std::strong_ordering::greater;
}
else
{
return value<CT> <=> rhs;
}
return rhs == max_v<T> ? std::strong_ordering::equal : std::strong_ordering::greater;
}
template <typename T, typename CT = std::common_type_t<T>> requires (std::is_integral_v<CT>) || (std::is_same_v<CT, s128>) || (std::is_same_v<CT, u128>)
template <SignedInt T>
constexpr operator T() const
{
return value<CT>;
return max_v<T>;
}
} smax;
// Compare signed or unsigned type with its max value
constexpr struct amax_impl_t
{
template <typename T>
static constexpr T value = (std::is_unsigned_v<T> || std::is_same_v<T, u128>) ? umax_impl_t::value<T> : smax_impl_t::value<T>;
template <typename T, typename CT = std::common_type_t<T>> requires (std::is_integral_v<CT>) || (std::is_same_v<CT, s128>) || (std::is_same_v<CT, u128>)
template <typename T> requires SignedInt<T> || UnsignedInt<T>
constexpr bool operator ==(const T& rhs) const
{
return rhs == value<CT>;
return rhs == max_v<T>;
}
template <typename T, typename CT = std::common_type_t<T>> requires (std::is_integral_v<CT>) || (std::is_same_v<CT, s128>) || (std::is_same_v<CT, u128>)
template <typename T> requires SignedInt<T> || UnsignedInt<T>
constexpr std::strong_ordering operator <=>(const T& rhs) const
{
return value<CT> <=> rhs;
return max_v<T> <=> rhs;
}
template <typename T, typename CT = std::common_type_t<T>> requires (std::is_integral_v<CT>) || (std::is_same_v<CT, s128>) || (std::is_same_v<CT, u128>)
template <typename T> requires SignedInt<T> || UnsignedInt<T>
constexpr operator T() const
{
return value<CT>;
return max_v<T>;
}
} amax;
// Compare signed or unsigned type with its minimal value (like zero or INT_MIN)
constexpr struct amin_impl_t
{
template <typename T>
static constexpr T value = (std::is_signed_v<T> || std::is_same_v<T, s128>) ? smin_impl_t::value<T> : 0;
template <typename T, typename CT = std::common_type_t<T>> requires (std::is_integral_v<CT>) || (std::is_same_v<CT, s128>) || (std::is_same_v<CT, u128>)
template <typename T> requires SignedInt<T> || UnsignedInt<T>
constexpr bool operator ==(const T& rhs) const
{
return rhs == value<CT>;
return rhs == min_v<T>;
}
template <typename T, typename CT = std::common_type_t<T>> requires (std::is_integral_v<T>) || (std::is_same_v<T, s128>) || (std::is_same_v<T, u128>)
template <typename T> requires SignedInt<T> || UnsignedInt<T>
constexpr std::strong_ordering operator <=>(const T& rhs) const
{
return value<CT> <=> rhs;
return min_v<T> <=> rhs;
}
template <typename T, typename CT = std::common_type_t<T>> requires (std::is_integral_v<T>) || (std::is_same_v<T, s128>) || (std::is_same_v<T, u128>)
template <typename T> requires SignedInt<T> || UnsignedInt<T>
constexpr operator T() const
{
return value<CT>;
return min_v<T>;
}
} amin;
enum class f16 : u16{};
using f32 = float;
using f64 = double;
template <typename T, typename T2>
inline u32 offset32(T T2::*const mptr)
{