hexTOB2bitsetTOB.cxx

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//  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
 
#include "hexTOB2bitsetTOB.h"
#include <algorithm>
 
namespace GlobalSim {
 
  std::bitset<72> hexTOB2bitsetTOB(std::string s) {
 
    auto bit_tob = std::bitset<72>();
    auto bs = std::bitset<4>();
 
    std::size_t ind{s.size()*4};
 
    // ensure s is lower case
    std::transform(s.begin(), s.end(), s.begin(),
           [](unsigned char c){return std::tolower(c);});
 
    for(const char& c : s) {
      bs = (c >= 'a') ? (c - 'a' + 10) : (c-'0');
      for (int j = 3; j != -1; --j) {
    bit_tob[--ind] = bs[j];
      }
      if (ind == 0) {break;}
    }
    return bit_tob;
  }
 
}