bitset_append.cc

Go to the documentation of this file.

#include "EventFilter/CSCRawToDigi/interface/bitset_append.h"
#include <iostream>
#include <cstdio>

namespace bitset_utilities {

  boost::dynamic_bitset<> append(const boost::dynamic_bitset<> &bs1, const boost::dynamic_bitset<> &bs2) {
    boost::dynamic_bitset<> result(bs1.size() + bs2.size());
    unsigned size1 = bs1.size();
    for (unsigned i = 0; i < size1; ++i) {
      result[i] = bs1[i];
    }
    for (unsigned i = 0; i < bs2.size(); ++i) {
      result[size1 + i] = bs2[i];
    }
    return result;
  }

  boost::dynamic_bitset<> ushortToBitset(const unsigned int numberOfBits, unsigned short *buf) {
    boost::dynamic_bitset<> result(numberOfBits);
    for (unsigned i = 0; i < result.size(); ++i) {
      result[i] = (buf[i / 16] >> (i % 16)) & 0x1;
    }
    return result;
  }

  void bitsetToChar(const boost::dynamic_bitset<> &bs, unsigned char *result) {
    for (unsigned i = 0; i < bs.size(); ++i) {
      result[i / 8] = (bs[i + 7] << 7) + (bs[i + 6] << 6) + (bs[i + 5] << 5) + (bs[i + 4] << 4) + (bs[i + 3] << 3) +
                      (bs[i + 2] << 2) + (bs[i + 1] << 1) + bs[i];
      i += 7;
    }
  }

  void printWords(const boost::dynamic_bitset<> &bs) {
    constexpr unsigned int nShorts = 30000;
    unsigned char words[nShorts * 2];
    bitsetToChar(bs, words);
    unsigned short *buf = (unsigned short *)words;
    for (int unsigned i = 0; i < bs.size() / 16 && i + 3 < nShorts; ++i) {
      printf("%04x %04x %04x %04x\n", buf[i + 3], buf[i + 2], buf[i + 1], buf[i]);
      i += 3;
    }
  }
}  // namespace bitset_utilities