Method GetBase2

secp256k1/Int.cpp:1066–1080

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// ------------------------------------------------
char* Int::GetBase2() {
  char *ret =  (char*) calloc(1,1024);
  int k=0;
  for(int i=0;i<NB32BLOCK-1;i++) {
    unsigned int mask=0x80000000;
    for(int j=0;j<32;j++) {
      if(bits[i]&mask) ret[k]='1';
      else             ret[k]='0';
      k++;
      mask=mask>>1;
    }
  }
  ret[k]=0;
  return ret;
}