datetime.hpp
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16 
17 #pragma once
18 
19 #include <cudf/types.hpp>
20 
21 #include <rmm/mr/device/per_device_resource.hpp>
22 
23 #include <memory>
24 
30 namespace cudf {
31 namespace datetime {
48 std::unique_ptr<cudf::column> extract_year(
49  cudf::column_view const& column,
50  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
51 
62 std::unique_ptr<cudf::column> extract_month(
63  cudf::column_view const& column,
64  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
65 
76 std::unique_ptr<cudf::column> extract_day(
77  cudf::column_view const& column,
78  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
79 
90 std::unique_ptr<cudf::column> extract_weekday(
91  cudf::column_view const& column,
92  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
93 
104 std::unique_ptr<cudf::column> extract_hour(
105  cudf::column_view const& column,
106  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
107 
118 std::unique_ptr<cudf::column> extract_minute(
119  cudf::column_view const& column,
120  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
121 
132 std::unique_ptr<cudf::column> extract_second(
133  cudf::column_view const& column,
134  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
135 
149 std::unique_ptr<cudf::column> extract_millisecond_fraction(
150  cudf::column_view const& column,
151  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
152 
166 std::unique_ptr<cudf::column> extract_microsecond_fraction(
167  cudf::column_view const& column,
168  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
169 
183 std::unique_ptr<cudf::column> extract_nanosecond_fraction(
184  cudf::column_view const& column,
185  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
186  // end of group
204 std::unique_ptr<cudf::column> last_day_of_month(
205  cudf::column_view const& column,
206  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
207 
218 std::unique_ptr<cudf::column> day_of_year(
219  cudf::column_view const& column,
220  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
221 
252 std::unique_ptr<cudf::column> add_calendrical_months(
253  cudf::column_view const& timestamps,
254  cudf::column_view const& months,
255  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
256 
287 std::unique_ptr<cudf::column> add_calendrical_months(
288  cudf::column_view const& timestamps,
289  cudf::scalar const& months,
290  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
291 
305 std::unique_ptr<cudf::column> is_leap_year(
306  cudf::column_view const& column,
307  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
308 
321 std::unique_ptr<cudf::column> days_in_month(
322  cudf::column_view const& column,
323  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
324 
337 std::unique_ptr<cudf::column> extract_quarter(
338  cudf::column_view const& column,
339  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
340 
345 enum class rounding_frequency : int32_t {
346  DAY,
347  HOUR,
348  MINUTE,
349  SECOND,
350  MILLISECOND,
351  MICROSECOND,
352  NANOSECOND
353 };
354 
365 std::unique_ptr<cudf::column> ceil_datetimes(
366  cudf::column_view const& column,
367  rounding_frequency freq,
368  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
369 
380 std::unique_ptr<cudf::column> floor_datetimes(
381  cudf::column_view const& column,
382  rounding_frequency freq,
383  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
384 
395 std::unique_ptr<cudf::column> round_datetimes(
396  cudf::column_view const& column,
397  rounding_frequency freq,
398  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
399  // end of group
401 
402 } // namespace datetime
403 } // namespace cudf
per_device_resource.hpp
cudf::column
A container of nullable device data as a column of elements.
Definition: column.hpp:48
cudf::column_view
A non-owning, immutable view of device data as a column of elements, some of which may be null as ind...
Definition: column_view.hpp:313
types.hpp
Type declarations for libcudf.
cudf::datetime::add_calendrical_months
std::unique_ptr< cudf::column > add_calendrical_months(cudf::column_view const &timestamps, cudf::scalar const &months, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Adds or subtracts a number of months from the datetime type and returns a timestamp column that is of...
cudf::datetime::extract_quarter
std::unique_ptr< cudf::column > extract_quarter(cudf::column_view const &column, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Returns the quarter of the date.
cudf::datetime::extract_hour
std::unique_ptr< cudf::column > extract_hour(cudf::column_view const &column, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Extracts hour from any datetime type and returns an int16_t cudf::column.
cudf::datetime::round_datetimes
std::unique_ptr< cudf::column > round_datetimes(cudf::column_view const &column, rounding_frequency freq, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Round datetimes to the nearest multiple of the given frequency.
cudf::datetime::day_of_year
std::unique_ptr< cudf::column > day_of_year(cudf::column_view const &column, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Computes the day number since the start of the year from the datetime and returns an int16_t cudf::co...
cudf::datetime::is_leap_year
std::unique_ptr< cudf::column > is_leap_year(cudf::column_view const &column, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Check if the year of the given date is a leap year.
cudf::datetime::extract_microsecond_fraction
std::unique_ptr< cudf::column > extract_microsecond_fraction(cudf::column_view const &column, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Extracts microsecond fraction from any datetime type and returns an int16_t cudf::column.
cudf::datetime::floor_datetimes
std::unique_ptr< cudf::column > floor_datetimes(cudf::column_view const &column, rounding_frequency freq, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Round datetimes down to the nearest multiple of the given frequency.
cudf::datetime::days_in_month
std::unique_ptr< cudf::column > days_in_month(cudf::column_view const &column, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Extract the number of days in the month.
cudf::datetime::extract_month
std::unique_ptr< cudf::column > extract_month(cudf::column_view const &column, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Extracts month from any datetime type and returns an int16_t cudf::column.
cudf::datetime::extract_year
std::unique_ptr< cudf::column > extract_year(cudf::column_view const &column, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Extracts year from any datetime type and returns an int16_t cudf::column.
cudf::datetime::extract_weekday
std::unique_ptr< cudf::column > extract_weekday(cudf::column_view const &column, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Extracts a weekday from any datetime type and returns an int16_t cudf::column.
cudf::scalar
An owning class to represent a singular value.
Definition: scalar.hpp:48
cudf::datetime::rounding_frequency
rounding_frequency
Fixed frequencies supported by datetime rounding functions ceil, floor, round.
Definition: datetime.hpp:345
cudf
cuDF interfaces
Definition: aggregation.hpp:34
cudf::datetime::extract_millisecond_fraction
std::unique_ptr< cudf::column > extract_millisecond_fraction(cudf::column_view const &column, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Extracts millisecond fraction from any datetime type and returns an int16_t cudf::column.
cudf::datetime::extract_nanosecond_fraction
std::unique_ptr< cudf::column > extract_nanosecond_fraction(cudf::column_view const &column, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Extracts nanosecond fraction from any datetime type and returns an int16_t cudf::column.
cudf::datetime::extract_day
std::unique_ptr< cudf::column > extract_day(cudf::column_view const &column, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Extracts day from any datetime type and returns an int16_t cudf::column.
rmm::mr::device_memory_resource
cudf::datetime::ceil_datetimes
std::unique_ptr< cudf::column > ceil_datetimes(cudf::column_view const &column, rounding_frequency freq, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Round datetimes up to the nearest multiple of the given frequency.
cudf::datetime::extract_minute
std::unique_ptr< cudf::column > extract_minute(cudf::column_view const &column, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Extracts minute from any datetime type and returns an int16_t cudf::column.
cudf::datetime::extract_second
std::unique_ptr< cudf::column > extract_second(cudf::column_view const &column, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Extracts second from any datetime type and returns an int16_t cudf::column.
cudf::datetime::last_day_of_month
std::unique_ptr< cudf::column > last_day_of_month(cudf::column_view const &column, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Computes the last day of the month in datetime type and returns a TIMESTAMP_DAYS cudf::column.
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