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8600c5149b
We defined copy operations but not move operations, so every existing move() resulted in a copy.
120 lines
4.7 KiB
C++
120 lines
4.7 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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* Copyright (c) 2022, David Tuin <davidot@serenityos.org>
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* Copyright (c) 2025, Altomani Gianluca <altomanigianluca@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibCrypto/BigInt/UnsignedBigInteger.h>
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namespace Crypto {
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struct SignedDivisionResult;
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class SignedBigInteger {
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public:
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template<Signed T>
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SignedBigInteger(T value)
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: SignedBigInteger(static_cast<i64>(value))
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{
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}
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SignedBigInteger(UnsignedBigInteger&& unsigned_data, bool sign);
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SignedBigInteger(u8 const* ptr, size_t length);
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explicit SignedBigInteger(UnsignedBigInteger const& unsigned_data);
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explicit SignedBigInteger(double value);
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explicit SignedBigInteger(i64 value);
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SignedBigInteger(SignedBigInteger const&);
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SignedBigInteger(SignedBigInteger&&);
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SignedBigInteger& operator=(SignedBigInteger const&);
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SignedBigInteger& operator=(SignedBigInteger&&);
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SignedBigInteger();
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~SignedBigInteger();
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[[nodiscard]] static SignedBigInteger import_data(StringView data) { return import_data(reinterpret_cast<u8 const*>(data.characters_without_null_termination()), data.length()); }
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[[nodiscard]] static SignedBigInteger import_data(u8 const* ptr, size_t length) { return SignedBigInteger(ptr, length); }
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size_t export_data(Bytes) const;
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[[nodiscard]] static ErrorOr<SignedBigInteger> from_base(u16 N, StringView str);
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[[nodiscard]] ErrorOr<String> to_base(u16 N) const;
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[[nodiscard]] u64 to_u64() const;
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[[nodiscard]] double to_double(UnsignedBigInteger::RoundingMode rounding_mode = UnsignedBigInteger::RoundingMode::IEEERoundAndTiesToEvenMantissa) const;
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[[nodiscard]] UnsignedBigInteger unsigned_value() const;
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[[nodiscard]] bool is_positive() const { return !is_negative() && !is_zero(); }
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[[nodiscard]] bool is_negative() const;
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[[nodiscard]] bool is_zero() const;
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void negate();
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void set_to_0();
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void set_to(i64 other);
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void set_to(SignedBigInteger const& other);
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[[nodiscard]] size_t byte_length() const;
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[[nodiscard]] SignedBigInteger plus(SignedBigInteger const& other) const;
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[[nodiscard]] SignedBigInteger minus(SignedBigInteger const& other) const;
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[[nodiscard]] SignedBigInteger bitwise_or(SignedBigInteger const& other) const;
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[[nodiscard]] SignedBigInteger bitwise_and(SignedBigInteger const& other) const;
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[[nodiscard]] SignedBigInteger bitwise_xor(SignedBigInteger const& other) const;
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[[nodiscard]] SignedBigInteger bitwise_not() const;
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[[nodiscard]] ErrorOr<SignedBigInteger> shift_left(size_t num_bits) const;
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[[nodiscard]] SignedBigInteger shift_right(size_t num_bits) const;
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[[nodiscard]] SignedBigInteger multiplied_by(SignedBigInteger const& other) const;
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[[nodiscard]] SignedDivisionResult divided_by(SignedBigInteger const& divisor) const;
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[[nodiscard]] SignedBigInteger pow(u32 exponent) const;
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[[nodiscard]] ErrorOr<SignedBigInteger> mod_power_of_two(size_t power_of_two) const;
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[[nodiscard]] SignedBigInteger plus(UnsignedBigInteger const& other) const;
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[[nodiscard]] SignedBigInteger minus(UnsignedBigInteger const& other) const;
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[[nodiscard]] SignedBigInteger multiplied_by(UnsignedBigInteger const& other) const;
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[[nodiscard]] SignedDivisionResult divided_by(UnsignedBigInteger const& divisor) const;
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[[nodiscard]] SignedBigInteger negated_value() const;
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[[nodiscard]] u32 hash() const;
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[[nodiscard]] bool operator==(SignedBigInteger const& other) const;
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[[nodiscard]] bool operator!=(SignedBigInteger const& other) const;
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[[nodiscard]] bool operator<(SignedBigInteger const& other) const;
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[[nodiscard]] bool operator<=(SignedBigInteger const& other) const;
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[[nodiscard]] bool operator>(SignedBigInteger const& other) const;
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[[nodiscard]] bool operator>=(SignedBigInteger const& other) const;
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[[nodiscard]] bool operator==(UnsignedBigInteger const& other) const;
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[[nodiscard]] bool operator!=(UnsignedBigInteger const& other) const;
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[[nodiscard]] bool operator<(UnsignedBigInteger const& other) const;
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[[nodiscard]] bool operator>(UnsignedBigInteger const& other) const;
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[[nodiscard]] UnsignedBigInteger::CompareResult compare_to_double(double) const;
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private:
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mp_int m_mp {};
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mutable Optional<u32> m_hash {};
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};
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struct SignedDivisionResult {
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Crypto::SignedBigInteger quotient;
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Crypto::SignedBigInteger remainder;
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};
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}
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template<>
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struct AK::Formatter<Crypto::SignedBigInteger> : AK::Formatter<Crypto::UnsignedBigInteger> {
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ErrorOr<void> format(FormatBuilder&, Crypto::SignedBigInteger const&);
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};
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inline Crypto::SignedBigInteger
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operator""_sbigint(char const* string, size_t length)
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{
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return MUST(Crypto::SignedBigInteger::from_base(10, { string, length }));
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}
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