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#ifndef _FUNCTIONS_H
#define _FUNCTIONS_H
#include <string>
#include <vector>
#include <algorithm>
#include <stdexcept>
#include <iostream>
#include <numeric>
#include <cmath>
#include <map>
unsigned long long m_pow(unsigned long long left, unsigned long long right)
{
unsigned long long multi = left;
right -= 1;
while (right>0)
{
left *= multi; --right;
}
return left;
}
void format_bin_mode(std::string& s, unsigned long long digits=4)
{
auto size = s.size();
if (size%digits != 0)
{
auto to_add = (digits - (size%digits));
s.insert(0, to_add, '0');
size += to_add;
}
if (size>digits)
{
unsigned long long counter = 0;
std::string temp{};
while (counter < size-1)
{
temp += s.substr(counter, digits)+" ";
counter += digits;
}
s = temp;
}
}
std::string dec_to_bin(unsigned long long no)
{
std::string data{};
if (no>1)
while (no)
{
data += std::to_string((no % 2));
no /= 2;
}
else
data += std::to_string((no));
std::reverse(data.begin(), data.end());
format_bin_mode(data);
return data;
}
unsigned long long bin_to_dec(const std::string& s)
{
unsigned long long size = s.size();
std::vector<unsigned long long> accum;
for (unsigned long long x = 0; x<size; x++)
{
if (s[x] == '1')
{
unsigned long long loc = ((size - 1) - x);
accum.push_back(pow(2, loc));
}
}
return std::accumulate(accum.cbegin(), accum.cend(), 0ull);
}
std::string bin_to_hex(std::string& s)
{
const std::vector<std::string> hex{ "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F" };
std::remove_if(s.begin(), s.end(), [](char&a){return a == ' '; });
std::string data{};
unsigned long long i = 0;
while (i < (s.size() - 1))
{
auto pos = bin_to_dec(s.substr(i, 4));
data += hex[pos];
i += 4;
}
data.insert(0, "0x");
return data;
}
std::string hex_to_bin(std::string s)
{
std::string data{};
if (s.find_first_not_of(std::string("xX0123456789ABCDEF")) != std::string::npos)
throw std::invalid_argument("invalid data\n");
std::map<char, std::string> lib
{ { '0', "0000"}, { '1', "0001"}, { '2', "0010"}, { '3', "0011"}, { '4', "0100"},
{ '5', "0101"}, { '6', "0110"}, { '7', "0111"}, { '8', "1000"}, { '9', "1001"},
{ 'A', "1010"}, { 'B', "1011"}, { 'C', "1100"}, { 'D', "1101"}, { 'E', "1110"}, { 'F',"1111"}
};
if (s.find("0x") != std::string::npos)
s.erase(s.begin(), s.begin()+2);
for (char & c : s)
{
data+=lib[c];
}
format_bin_mode(data);
return data;
}
std::string dec_to_hex(unsigned long long dci)
{
auto data = dec_to_bin(dci);
auto hex = bin_to_hex(data);
return hex;
}
unsigned long long oct_to_dec(unsigned long long oct)
{
const std::string data = std::to_string(oct);
std::size_t size = data.size() - 1;
std::map<char,std::size_t> lib
{ { '0', 0 }, { '1', 1 }, { '2', 2 }, { '3', 3 }, { '4', 4 },
{ '5', 5 }, { '6', 6 }, { '7', 7 }, {'8',8}
};
std::size_t loc = 0;
unsigned long long resl = 0;
while (loc <= size)
{
int dif = (size - loc);
resl += (lib[data[loc]]*pow(8,dif));
++loc;
}
return resl;
}
std::size_t dec_to_oct(std::size_t dec)
{
std::string data{};
if (dec < 8 && dec >= 0)
return dec;
while (true)
{
if (dec < 8)
{
data += std::to_string(dec);
break;
}
data += std::to_string(dec % 8);
dec /= 8;
}
std::reverse(data.begin(), data.end());
return std::stoull(data);
}
std::string oct_to_bin(std::size_t oct)
{
return dec_to_bin(oct);
}
std::string oct_to_hex(std::size_t oct)
{
auto bin = oct_to_bin(oct);
return bin_to_hex(bin);
}
#endif ///_FUNCTIONS_H
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