change empty feature value to NaN.

3db907cc · Guolin Ke · 97995dcf · 3db907cc
Commit 3db907cc authored Aug 28, 2017 by Guolin Ke
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include/LightGBM/utils/common.h include/LightGBM/utils/common.h +1 -1

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--- a/include/LightGBM/utils/common.h
+++ b/include/LightGBM/utils/common.h
@@ -163,7 +163,7 @@ inline static const char* Atoi(const char* p, int* out) {
 inline static const char* Atof(const char* p, double* out) {
  int frac;
  double sign, value, scale;
-  *out = 0;
+  *out = NAN;
  // Skip leading white space, if any.
  while (*p == ' ') {
    ++p;