Lines Matching defs:tan_x

221   double tan_x = (num_dd.hi + num_dd.lo) / (den_dd.hi + den_dd.lo);
222   return tan_x;
227   DoubleDouble tan_x = fputil::div(num_dd, den_dd);
234   // For tan_x = (num_dd + err) / (den_dd + err), the error is bounded by:
235   //   | tan_x - num_dd / den_dd |  <= err * ( 1 + | tan_x * den_dd | ).
238                                  FPBits(tan_x.hi).abs().get_val(), 1.0);
240   double err_higher = tan_x.lo + tan_err;
241   double err_lower = tan_x.lo - tan_err;
243   double tan_upper = tan_x.hi + err_higher;
244   double tan_lower = tan_x.hi + err_lower;