projjal commented on a change in pull request #9890:
URL: https://github.com/apache/arrow/pull/9890#discussion_r623785058
##########
File path: cpp/src/gandiva/precompiled/time.cc
##########
@@ -828,4 +841,22 @@ gdv_int64 castBIGINT_daytimeinterval(gdv_day_time_interval
in) {
extractDay_daytimeinterval(in) * MILLIS_IN_DAY;
}
+// Convert the seconds since epoch argument to timestamp
+#define TO_TIMESTAMP(TYPE) \
+ FORCE_INLINE \
+ gdv_timestamp to_timestamp##_##TYPE(gdv_##TYPE seconds) { \
+ return static_cast<gdv_timestamp>(seconds) * MILLIS_IN_SEC; \
+ }
+
+NUMERIC_TYPES(TO_TIMESTAMP)
+
+// Convert the seconds since epoch argument to time
+#define TO_TIME(TYPE) \
+ FORCE_INLINE \
+ gdv_time32 to_time##_##TYPE(gdv_##TYPE seconds) { \
+ return static_cast<gdv_time32>(seconds) * MILLIS_IN_SEC; \
Review comment:
It should be something like
```
EpochTimePoint tp(seconds * MILLIS_IN_SEC);
return tp.TimeOfDay().to_duration().to_millis()
```
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