bet_rand.cpp

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#include <fvar.hpp>
#ifndef OPT_LIB
  #include <cassert>
  #include <climits>
#endif

double better_rand(long int& idum)
{
#ifndef OPT_LIB
  assert(idum <= INT_MAX);
#endif
  random_number_generator rng((int)idum);
  double rr = ((random_number_generator&) rng).better_rand();
  return rr;
}