cudf/replace.hpp
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1 /*
2  * SPDX-FileCopyrightText: Copyright (c) 2018-2024, NVIDIA CORPORATION.
3  * SPDX-License-Identifier: Apache-2.0
4  */
5 
6 #pragma once
7 
8 #include <cudf/types.hpp>
9 #include <cudf/utilities/default_stream.hpp>
10 #include <cudf/utilities/export.hpp>
11 #include <cudf/utilities/memory_resource.hpp>
12 
13 #include <memory>
14 
15 namespace CUDF_EXPORT cudf {
28 enum class replace_policy : bool { PRECEDING, FOLLOWING };
29 
44 std::unique_ptr<column> replace_nulls(
45  column_view const& input,
46  column_view const& replacement,
47  rmm::cuda_stream_view stream = cudf::get_default_stream(),
48  rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());
49 
63 std::unique_ptr<column> replace_nulls(
64  column_view const& input,
65  scalar const& replacement,
66  rmm::cuda_stream_view stream = cudf::get_default_stream(),
67  rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());
68 
82 std::unique_ptr<column> replace_nulls(
83  column_view const& input,
84  replace_policy const& replace_policy,
85  rmm::cuda_stream_view stream = cudf::get_default_stream(),
86  rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());
87 
110 std::unique_ptr<column> replace_nans(
111  column_view const& input,
112  column_view const& replacement,
113  rmm::cuda_stream_view stream = cudf::get_default_stream(),
114  rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());
115 
137 std::unique_ptr<column> replace_nans(
138  column_view const& input,
139  scalar const& replacement,
140  rmm::cuda_stream_view stream = cudf::get_default_stream(),
141  rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());
142 
155 std::unique_ptr<column> find_and_replace_all(
156  column_view const& input_col,
157  column_view const& values_to_replace,
158  column_view const& replacement_values,
159  rmm::cuda_stream_view stream = cudf::get_default_stream(),
160  rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());
161 
208 std::unique_ptr<column> clamp(
209  column_view const& input,
210  scalar const& lo,
211  scalar const& lo_replace,
212  scalar const& hi,
213  scalar const& hi_replace,
214  rmm::cuda_stream_view stream = cudf::get_default_stream(),
215  rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());
216 
256 std::unique_ptr<column> clamp(
257  column_view const& input,
258  scalar const& lo,
259  scalar const& hi,
260  rmm::cuda_stream_view stream = cudf::get_default_stream(),
261  rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());
262 
278 std::unique_ptr<column> normalize_nans_and_zeros(
279  column_view const& input,
280  rmm::cuda_stream_view stream = cudf::get_default_stream(),
281  rmm::device_async_resource_ref mr = cudf::get_current_device_resource_ref());
282 
295 void normalize_nans_and_zeros(mutable_column_view& in_out,
296  rmm::cuda_stream_view stream = cudf::get_default_stream());
297  // end of group
299 } // namespace CUDF_EXPORT cudf
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:316
cudf::mutable_column_view
A non-owning, mutable view of device data as a column of elements, some of which may be null as indic...
Definition: column_view.hpp:492
cudf::scalar
An owning class to represent a singular value.
Definition: scalar.hpp:40
rmm::cuda_stream_view
default_stream.hpp
cudf::get_default_stream
rmm::cuda_stream_view const get_default_stream()
Get the current default stream.
cudf::get_current_device_resource_ref
rmm::device_async_resource_ref get_current_device_resource_ref()
Get the current device memory resource reference.
Definition: memory_resource.hpp:40
device_async_resource_ref
detail::cccl_async_resource_ref< cuda::mr::resource_ref< cuda::mr::device_accessible > > device_async_resource_ref
cudf::replace_nans
std::unique_ptr< column > replace_nans(column_view const &input, scalar const &replacement, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=cudf::get_current_device_resource_ref())
Replaces all NaN values in a column with a scalar.
cudf::replace_nulls
std::unique_ptr< column > replace_nulls(column_view const &input, replace_policy const &replace_policy, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=cudf::get_current_device_resource_ref())
Replaces all null values in a column with the first non-null value that precedes/follows.
cudf::find_and_replace_all
std::unique_ptr< column > find_and_replace_all(column_view const &input_col, column_view const &values_to_replace, column_view const &replacement_values, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=cudf::get_current_device_resource_ref())
Return a copy of input_col replacing any values_to_replace[i] found with replacement_values[i].
cudf::normalize_nans_and_zeros
void normalize_nans_and_zeros(mutable_column_view &in_out, rmm::cuda_stream_view stream=cudf::get_default_stream())
Modifies a column of floating-point elements to replace all -NaN and -0.0 with +NaN and +0....
cudf::replace_policy
replace_policy
Policy to specify the position of replacement values relative to null rows.
Definition: cudf/replace.hpp:28
cudf::clamp
std::unique_ptr< column > clamp(column_view const &input, scalar const &lo, scalar const &hi, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=cudf::get_current_device_resource_ref())
Replaces values less than lo in input with lo, and values greater than hi with hi.
memory_resource.hpp
cudf
cuDF interfaces
Definition: host_udf.hpp:26
types.hpp
Type declarations for libcudf.
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