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Add type aliases and literals up to uint512 #317

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Sep 2, 2024
Merged

Add type aliases and literals up to uint512 #317

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38 changes: 22 additions & 16 deletions include/intx/intx.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -916,11 +916,6 @@ inline constexpr Int from_string(const std::string& s)
return from_string<Int>(s.c_str());
}

consteval uint128 operator""_u128(const char* s)
{
return from_string<uint128>(s);
}

template <unsigned N>
inline std::string to_string(uint<N> x, int base = 10)
{
Expand Down Expand Up @@ -1104,6 +1099,7 @@ using uint192 = uint<192>;
using uint256 = uint<256>;
using uint320 = uint<320>;
using uint384 = uint<384>;
using uint448 = uint<448>;
using uint512 = uint<512>;

template <unsigned N>
Expand Down Expand Up @@ -1843,17 +1839,27 @@ inline constexpr uint256 mulmod(const uint256& x, const uint256& y, const uint25
return udivrem(umul(x, y), mod).rem;
}


consteval uint256 operator""_u256(const char* s)
{
return from_string<uint256>(s);
}

consteval uint512 operator""_u512(const char* s)
{
return from_string<uint512>(s);
}

/// Define type alias uintN = uint<N> and the matching literal ""_uN.
/// The literal operators are defined in the intx::literals namespace.
#define DEFINE_ALIAS_AND_LITERAL(N) \
using uint##N = uint<N>; \
namespace literals \
{ \
consteval uint##N operator""_u##N(const char* s) \
{ \
return from_string<uint##N>(s); \
} \
}
DEFINE_ALIAS_AND_LITERAL(128);
DEFINE_ALIAS_AND_LITERAL(192);
DEFINE_ALIAS_AND_LITERAL(256);
DEFINE_ALIAS_AND_LITERAL(320);
DEFINE_ALIAS_AND_LITERAL(384);
DEFINE_ALIAS_AND_LITERAL(448);
DEFINE_ALIAS_AND_LITERAL(512);
#undef DEFINE_ALIAS_AND_LITERAL

using namespace literals;

/// Convert native representation to/from little-endian byte order.
/// intx and built-in integral types are supported.
Expand Down
10 changes: 10 additions & 0 deletions test/unittests/test_intx_api.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,16 @@

#include "test_suite.hpp"

using namespace intx::literals;

static_assert(1_u128);
static_assert(1_u192);
static_assert(1_u256);
static_assert(1_u320);
static_assert(1_u384);
static_assert(1_u448);
static_assert(1_u512);

using namespace intx;

static_assert(uint128{2} + uint128{2} == 4);
Expand Down