Tifa's CP Library

:warning: u32tostrhex (src/code/fast/u32tostrhex.hpp)

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Code

#ifndef TIFALIBS_FAST_UINT2STRHEX_32
#define TIFALIBS_FAST_UINT2STRHEX_32

#include "../util/util.hpp"

namespace tifa_libs {

template <bool lower = true>
constexpr u32 u32tostrhex(u32 x, char *s) {
  constexpr char uppert[513] =
      "000102030405060708090A0B0C0D0E0F"
      "101112131415161718191A1B1C1D1E1F"
      "202122232425262728292A2B2C2D2E2F"
      "303132333435363738393A3B3C3D3E3F"
      "404142434445464748494A4B4C4D4E4F"
      "505152535455565758595A5B5C5D5E5F"
      "606162636465666768696A6B6C6D6E6F"
      "707172737475767778797A7B7C7D7E7F"
      "808182838485868788898A8B8C8D8E8F"
      "909192939495969798999A9B9C9D9E9F"
      "A0A1A2A3A4A5A6A7A8A9AAABACADAEAF"
      "B0B1B2B3B4B5B6B7B8B9BABBBCBDBEBF"
      "C0C1C2C3C4C5C6C7C8C9CACBCCCDCECF"
      "D0D1D2D3D4D5D6D7D8D9DADBDCDDDEDF"
      "E0E1E2E3E4E5E6E7E8E9EAEBECEDEEEF"
      "F0F1F2F3F4F5F6F7F8F9FAFBFCFDFEFF";
  constexpr char lowert[513] =
      "000102030405060708090a0b0c0d0e0f"
      "101112131415161718191a1b1c1d1e1f"
      "202122232425262728292a2b2c2d2e2f"
      "303132333435363738393a3b3c3d3e3f"
      "404142434445464748494a4b4c4d4e4f"
      "505152535455565758595a5b5c5d5e5f"
      "606162636465666768696a6b6c6d6e6f"
      "707172737475767778797a7b7c7d7e7f"
      "808182838485868788898a8b8c8d8e8f"
      "909192939495969798999a9b9c9d9e9f"
      "a0a1a2a3a4a5a6a7a8a9aaabacadaeaf"
      "b0b1b2b3b4b5b6b7b8b9babbbcbdbebf"
      "c0c1c2c3c4c5c6c7c8c9cacbcccdcecf"
      "d0d1d2d3d4d5d6d7d8d9dadbdcdddedf"
      "e0e1e2e3e4e5e6e7e8e9eaebecedeeef"
      "f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff";
  const char *lut = nullptr;
  if constexpr (lower) lut = lowert;
  else lut = uppert;
  for (int i = 3; ~i; x >>= 8, --i) {
    int pos = (x & 255) * 2;
    s[i * 2] = lut[pos];
    s[i * 2 + 1] = lut[pos + 1];
  }
  return 0;
}

}  // namespace tifa_libs

#endif
#line 1 "src/code/fast/u32tostrhex.hpp"



#line 1 "src/code/util/util.hpp"



#include <bits/stdc++.h>

template <class T>
constexpr T abs(T x) { return x < 0 ? -x : x; }

using i8 = int8_t;
using i16 = int16_t;
using i32 = int32_t;
using i64 = int64_t;
using i128 = __int128_t;
using isz = ptrdiff_t;

using u8 = uint8_t;
using u16 = uint16_t;
using u32 = uint32_t;
using u64 = uint64_t;
using u128 = __uint128_t;
using usz = size_t;

using f32 = float;
using f64 = double;
using f128 = long double;

template <class T>
using ptt = std::pair<T, T>;
template <class T>
using pt3 = std::tuple<T, T, T>;
template <class T>
using pt4 = std::tuple<T, T, T, T>;

template <class T, usz N>
using arr = std::array<T, N>;
template <class T>
using vec = std::vector<T>;
template <class T>
using vvec = vec<vec<T>>;
template <class T>
using v3ec = vec<vvec<T>>;
template <class U, class T>
using vecp = vec<std::pair<U, T>>;
template <class U, class T>
using vvecp = vvec<std::pair<U, T>>;
template <class T>
using vecpt = vec<ptt<T>>;
template <class T>
using vvecpt = vvec<ptt<T>>;

template <class T, class C = std::less<T>>
using pq = std::priority_queue<T, vec<T>, C>;
template <class T>
using pqg = std::priority_queue<T, vec<T>, std::greater<T>>;

using strn = std::string;
using strnv = std::string_view;

using vecu = vec<u32>;
using vvecu = vvec<u32>;
using v3ecu = v3ec<u32>;
using vecu64 = vec<u64>;
using vecb = vec<bool>;
using vvecb = vvec<bool>;

#ifdef ONLINE_JUDGE
#undef assert
#define assert(x) 42
#endif

using namespace std::literals;

constexpr i8 operator""_i8(unsigned long long x) { return (i8)x; }
constexpr i16 operator""_i16(unsigned long long x) { return (i16)x; }
constexpr i32 operator""_i32(unsigned long long x) { return (i32)x; }
constexpr i64 operator""_i64(unsigned long long x) { return (i64)x; }
constexpr isz operator""_iz(unsigned long long x) { return (isz)x; }

constexpr u8 operator""_u8(unsigned long long x) { return (u8)x; }
constexpr u16 operator""_u16(unsigned long long x) { return (u16)x; }
constexpr u32 operator""_u32(unsigned long long x) { return (u32)x; }
constexpr u64 operator""_u64(unsigned long long x) { return (u64)x; }
constexpr usz operator""_uz(unsigned long long x) { return (usz)x; }

inline const auto fn_0 = [](auto&&...) {};
inline const auto fn_is0 = [](auto x) { return x == 0; };


#line 5 "src/code/fast/u32tostrhex.hpp"

namespace tifa_libs {

template <bool lower = true>
constexpr u32 u32tostrhex(u32 x, char *s) {
  constexpr char uppert[513] =
      "000102030405060708090A0B0C0D0E0F"
      "101112131415161718191A1B1C1D1E1F"
      "202122232425262728292A2B2C2D2E2F"
      "303132333435363738393A3B3C3D3E3F"
      "404142434445464748494A4B4C4D4E4F"
      "505152535455565758595A5B5C5D5E5F"
      "606162636465666768696A6B6C6D6E6F"
      "707172737475767778797A7B7C7D7E7F"
      "808182838485868788898A8B8C8D8E8F"
      "909192939495969798999A9B9C9D9E9F"
      "A0A1A2A3A4A5A6A7A8A9AAABACADAEAF"
      "B0B1B2B3B4B5B6B7B8B9BABBBCBDBEBF"
      "C0C1C2C3C4C5C6C7C8C9CACBCCCDCECF"
      "D0D1D2D3D4D5D6D7D8D9DADBDCDDDEDF"
      "E0E1E2E3E4E5E6E7E8E9EAEBECEDEEEF"
      "F0F1F2F3F4F5F6F7F8F9FAFBFCFDFEFF";
  constexpr char lowert[513] =
      "000102030405060708090a0b0c0d0e0f"
      "101112131415161718191a1b1c1d1e1f"
      "202122232425262728292a2b2c2d2e2f"
      "303132333435363738393a3b3c3d3e3f"
      "404142434445464748494a4b4c4d4e4f"
      "505152535455565758595a5b5c5d5e5f"
      "606162636465666768696a6b6c6d6e6f"
      "707172737475767778797a7b7c7d7e7f"
      "808182838485868788898a8b8c8d8e8f"
      "909192939495969798999a9b9c9d9e9f"
      "a0a1a2a3a4a5a6a7a8a9aaabacadaeaf"
      "b0b1b2b3b4b5b6b7b8b9babbbcbdbebf"
      "c0c1c2c3c4c5c6c7c8c9cacbcccdcecf"
      "d0d1d2d3d4d5d6d7d8d9dadbdcdddedf"
      "e0e1e2e3e4e5e6e7e8e9eaebecedeeef"
      "f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff";
  const char *lut = nullptr;
  if constexpr (lower) lut = lowert;
  else lut = uppert;
  for (int i = 3; ~i; x >>= 8, --i) {
    int pos = (x & 255) * 2;
    s[i * 2] = lut[pos];
    s[i * 2 + 1] = lut[pos + 1];
  }
  return 0;
}

}  // namespace tifa_libs


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