fvar_a58.cpp

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#include "fvar.hpp"

ivector sgn(const dvar_vector& variables)
{
  int mmin = variables.indexmin();
  int mmax = variables.indexmax();
  ivector signs(mmin,mmax);
  for (int i = mmin; i <= mmax; ++i)
  {
    signs(i) = variables(i) > 0.0 ? 1 : -1;
  }
  return signs;
}