Use double precision in metric calculation. (#7364)

2021-11-02 12:00:32 +08:00
parent 239dbb3c0a
commit 0f7a9b42f1
11 changed files with 219 additions and 224 deletions
--- a/src/learner.cc
+++ b/src/learner.cc
@@ -1110,6 +1110,7 @@ class LearnerImpl : public LearnerIO {
    this->Configure();

    std::ostringstream os;
+    os.precision(std::numeric_limits<double>::max_digits10);
    os << '[' << iter << ']' << std::setiosflags(std::ios::fixed);
    if (metrics_.size() == 0 && tparam_.disable_default_eval_metric <= 0) {
      auto warn_default_eval_metric = [](const std::string& objective, const std::string& before,