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src/share/vm/utilities/numberSeq.cpp

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 217 
 218     x_squared_sum += x * x;
 219     x_sum         += x;
 220     y_sum         += y;
 221     xy_sum        += x * y;
 222   }
 223   x_avg = x_sum / num;
 224   y_avg = y_sum / num;
 225 
 226   double Sxx = x_squared_sum - x_sum * x_sum / num;
 227   double Sxy = xy_sum - x_sum * y_sum / num;
 228   double b1 = Sxy / Sxx;
 229   double b0 = y_avg - b1 * x_avg;
 230 
 231   return b0 + b1 * num;
 232 }
 233 
 234 
 235 // Printing/Debugging Support
 236 
 237 void AbsSeq::dump() { dump_on(gclog_or_tty); }
 238 
 239 void AbsSeq::dump_on(outputStream* s) {
 240   s->print_cr("\t _num = %d, _sum = %7.3f, _sum_of_squares = %7.3f",
 241                   _num,      _sum,         _sum_of_squares);
 242   s->print_cr("\t _davg = %7.3f, _dvariance = %7.3f, _alpha = %7.3f",
 243                   _davg,         _dvariance,         _alpha);
 244 }
 245 
 246 void NumberSeq::dump_on(outputStream* s) {
 247   AbsSeq::dump_on(s);
 248   s->print_cr("\t\t _last = %7.3f, _maximum = %7.3f", _last, _maximum);
 249 }
 250 
 251 void TruncatedSeq::dump_on(outputStream* s) {
 252   AbsSeq::dump_on(s);
 253   s->print_cr("\t\t _length = %d, _next = %d", _length, _next);
 254   for (int i = 0; i < _length; i++) {
 255     if (i%5 == 0) {
 256       s->cr();
 257       s->print("\t");


 217 
 218     x_squared_sum += x * x;
 219     x_sum         += x;
 220     y_sum         += y;
 221     xy_sum        += x * y;
 222   }
 223   x_avg = x_sum / num;
 224   y_avg = y_sum / num;
 225 
 226   double Sxx = x_squared_sum - x_sum * x_sum / num;
 227   double Sxy = xy_sum - x_sum * y_sum / num;
 228   double b1 = Sxy / Sxx;
 229   double b0 = y_avg - b1 * x_avg;
 230 
 231   return b0 + b1 * num;
 232 }
 233 
 234 
 235 // Printing/Debugging Support
 236 
 237 void AbsSeq::dump() { dump_on(tty); }
 238 
 239 void AbsSeq::dump_on(outputStream* s) {
 240   s->print_cr("\t _num = %d, _sum = %7.3f, _sum_of_squares = %7.3f",
 241                   _num,      _sum,         _sum_of_squares);
 242   s->print_cr("\t _davg = %7.3f, _dvariance = %7.3f, _alpha = %7.3f",
 243                   _davg,         _dvariance,         _alpha);
 244 }
 245 
 246 void NumberSeq::dump_on(outputStream* s) {
 247   AbsSeq::dump_on(s);
 248   s->print_cr("\t\t _last = %7.3f, _maximum = %7.3f", _last, _maximum);
 249 }
 250 
 251 void TruncatedSeq::dump_on(outputStream* s) {
 252   AbsSeq::dump_on(s);
 253   s->print_cr("\t\t _length = %d, _next = %d", _length, _next);
 254   for (int i = 0; i < _length; i++) {
 255     if (i%5 == 0) {
 256       s->cr();
 257       s->print("\t");
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