135 lines
4.6 KiB
C++
135 lines
4.6 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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// This file is copied from
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// https://github.com/ClickHouse/ClickHouse/blob/master/src/Functions/Modulo.cpp
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// and modified by Doris
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#include <libdivide.h>
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#include "common/status.h"
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#include "runtime/decimalv2_value.h"
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#include "vec/core/types.h"
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#include "vec/functions/function_binary_arithmetic.h"
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#include "vec/functions/simple_function_factory.h"
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namespace doris::vectorized {
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template <typename A, typename B>
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struct ModuloImpl {
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using ResultType = typename NumberTraits::ResultOfModulo<A, B>::Type;
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using Traits = NumberTraits::BinaryOperatorTraits<A, B>;
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template <typename Result = ResultType>
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static void apply(const typename Traits::ArrayA& a, B b,
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typename ColumnVector<Result>::Container& c,
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typename Traits::ArrayNull& null_map) {
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size_t size = c.size();
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UInt8 is_null = b == 0;
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memset(null_map.data(), is_null, sizeof(UInt8) * size);
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if (!is_null) {
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for (size_t i = 0; i < size; i++) {
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if constexpr (std::is_floating_point_v<ResultType>) {
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c[i] = std::fmod((double)a[i], (double)b);
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} else {
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c[i] = a[i] % b;
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}
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}
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}
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}
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template <typename Result = ResultType>
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static inline Result apply(A a, B b, UInt8& is_null) {
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is_null = b == 0;
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b += is_null;
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if constexpr (std::is_floating_point_v<Result>) {
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return std::fmod((double)a, (double)b);
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} else {
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return a % b;
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}
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}
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template <typename Result = DecimalV2Value>
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static inline DecimalV2Value apply(DecimalV2Value a, DecimalV2Value b, UInt8& is_null) {
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is_null = b == DecimalV2Value(0);
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return a % (b + DecimalV2Value(is_null));
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}
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};
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template <typename A, typename B>
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struct PModuloImpl {
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using ResultType = typename NumberTraits::ResultOfModulo<A, B>::Type;
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using Traits = NumberTraits::BinaryOperatorTraits<A, B>;
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template <typename Result = ResultType>
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static void apply(const typename Traits::ArrayA& a, B b,
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typename ColumnVector<Result>::Container& c,
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typename Traits::ArrayNull& null_map) {
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size_t size = c.size();
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UInt8 is_null = b == 0;
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memset(null_map.data(), is_null, size);
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if (!is_null) {
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for (size_t i = 0; i < size; i++) {
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if constexpr (std::is_floating_point_v<ResultType>) {
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c[i] = std::fmod(std::fmod((double)a[i], (double)b) + (double)b, double(b));
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} else {
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c[i] = (a[i] % b + b) % b;
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}
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}
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}
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}
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template <typename Result = ResultType>
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static inline Result apply(A a, B b, UInt8& is_null) {
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is_null = b == 0;
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b += is_null;
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if constexpr (std::is_floating_point_v<Result>) {
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return std::fmod(std::fmod((double)a, (double)b) + (double)b, (double)b);
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} else {
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return (a % b + b) % b;
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}
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}
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template <typename Result = DecimalV2Value>
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static inline DecimalV2Value apply(DecimalV2Value a, DecimalV2Value b, UInt8& is_null) {
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is_null = b == DecimalV2Value(0);
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b += DecimalV2Value(is_null);
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return (a % b + b) % b;
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}
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};
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struct NameModulo {
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static constexpr auto name = "mod";
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};
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struct NamePModulo {
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static constexpr auto name = "pmod";
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};
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using FunctionModulo = FunctionBinaryArithmetic<ModuloImpl, NameModulo, true>;
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using FunctionPModulo = FunctionBinaryArithmetic<PModuloImpl, NamePModulo, true>;
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void register_function_modulo(SimpleFunctionFactory& factory) {
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factory.register_function<FunctionModulo>();
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factory.register_function<FunctionPModulo>();
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factory.register_alias("mod", "fmod");
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}
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} // namespace doris::vectorized
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