869fdff2f0
According to the requirements of the APLv2, the referenced code needs to be marked with the path of the source code.
220 lines
13 KiB
C++
220 lines
13 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/apache/impala/blob/branch-2.9.0/be/src/exprs/math-functions.h
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// and modified by Doris
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#ifndef DORIS_BE_SRC_QUERY_EXPRS_MATH_FUNCTIONS_H
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#define DORIS_BE_SRC_QUERY_EXPRS_MATH_FUNCTIONS_H
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#include <stdint.h>
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#include "util/string_parser.hpp"
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namespace doris {
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class Expr;
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struct ExprValue;
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class TupleRow;
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class MathFunctions {
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public:
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static void init();
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static doris_udf::DoubleVal pi(doris_udf::FunctionContext* ctx);
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static doris_udf::DoubleVal e(doris_udf::FunctionContext* ctx);
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static doris_udf::DoubleVal abs(doris_udf::FunctionContext*, const doris_udf::DoubleVal&);
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static doris_udf::FloatVal abs(doris_udf::FunctionContext*, const doris_udf::FloatVal&);
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static doris_udf::DecimalV2Val abs(doris_udf::FunctionContext*, const doris_udf::DecimalV2Val&);
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// For integer math, we have to promote ABS() to the next highest integer type because
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// in two's complement arithmetic, the largest negative value for any bit width is not
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// representable as a positive value within the same width. For the largest width, we
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// simply overflow. In the unlikely event a workaround is needed, one can simply cast
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// to a higher precision decimal type.
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static doris_udf::LargeIntVal abs(doris_udf::FunctionContext*, const doris_udf::LargeIntVal&);
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static doris_udf::LargeIntVal abs(doris_udf::FunctionContext*, const doris_udf::BigIntVal&);
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static doris_udf::BigIntVal abs(doris_udf::FunctionContext*, const doris_udf::IntVal&);
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static doris_udf::IntVal abs(doris_udf::FunctionContext*, const doris_udf::SmallIntVal&);
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static doris_udf::SmallIntVal abs(doris_udf::FunctionContext*, const doris_udf::TinyIntVal&);
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static doris_udf::TinyIntVal sign(doris_udf::FunctionContext* ctx,
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const doris_udf::DoubleVal& v);
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static doris_udf::DoubleVal sin(doris_udf::FunctionContext*, const doris_udf::DoubleVal&);
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static doris_udf::DoubleVal asin(doris_udf::FunctionContext*, const doris_udf::DoubleVal&);
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static doris_udf::DoubleVal cos(doris_udf::FunctionContext*, const doris_udf::DoubleVal&);
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static doris_udf::DoubleVal acos(doris_udf::FunctionContext*, const doris_udf::DoubleVal&);
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static doris_udf::DoubleVal tan(doris_udf::FunctionContext*, const doris_udf::DoubleVal&);
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static doris_udf::DoubleVal atan(doris_udf::FunctionContext*, const doris_udf::DoubleVal&);
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static doris_udf::BigIntVal ceil(doris_udf::FunctionContext*, const doris_udf::DoubleVal&);
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static doris_udf::BigIntVal floor(doris_udf::FunctionContext*, const doris_udf::DoubleVal&);
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static doris_udf::BigIntVal round(doris_udf::FunctionContext* ctx,
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const doris_udf::DoubleVal& v);
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static doris_udf::DoubleVal round_up_to(doris_udf::FunctionContext* ctx,
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const doris_udf::DoubleVal& v,
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const doris_udf::IntVal& scale);
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static doris_udf::DoubleVal truncate(doris_udf::FunctionContext* ctx,
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const doris_udf::DoubleVal& v,
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const doris_udf::IntVal& scale);
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static doris_udf::DoubleVal ln(doris_udf::FunctionContext*, const doris_udf::DoubleVal&);
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static doris_udf::DoubleVal log(doris_udf::FunctionContext* ctx,
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const doris_udf::DoubleVal& base,
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const doris_udf::DoubleVal& v);
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static doris_udf::DoubleVal log2(doris_udf::FunctionContext* ctx,
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const doris_udf::DoubleVal& v);
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static doris_udf::DoubleVal log10(doris_udf::FunctionContext*, const doris_udf::DoubleVal&);
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static doris_udf::DoubleVal exp(doris_udf::FunctionContext*, const doris_udf::DoubleVal&);
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static doris_udf::DoubleVal radians(doris_udf::FunctionContext* ctx,
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const doris_udf::DoubleVal& v);
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static doris_udf::DoubleVal degrees(doris_udf::FunctionContext* ctx,
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const doris_udf::DoubleVal& v);
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static doris_udf::DoubleVal sqrt(doris_udf::FunctionContext*, const doris_udf::DoubleVal&);
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static doris_udf::DoubleVal pow(doris_udf::FunctionContext* ctx,
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const doris_udf::DoubleVal& base,
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const doris_udf::DoubleVal& exp);
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/// Used for both rand() and rand_seed()
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static void rand_prepare(doris_udf::FunctionContext*,
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doris_udf::FunctionContext::FunctionStateScope);
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static doris_udf::DoubleVal rand(doris_udf::FunctionContext*);
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static doris_udf::DoubleVal rand_seed(doris_udf::FunctionContext*,
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const doris_udf::BigIntVal& seed);
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static void rand_close(FunctionContext* ctx, FunctionContext::FunctionStateScope scope);
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static doris_udf::StringVal bin(doris_udf::FunctionContext* ctx, const doris_udf::BigIntVal& v);
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static doris_udf::StringVal hex_int(doris_udf::FunctionContext* ctx,
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const doris_udf::BigIntVal& v);
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static doris_udf::StringVal hex_string(doris_udf::FunctionContext* ctx,
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const doris_udf::StringVal& s);
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static doris_udf::StringVal unhex(doris_udf::FunctionContext* ctx,
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const doris_udf::StringVal& s);
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static doris_udf::StringVal conv_int(doris_udf::FunctionContext* ctx,
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const doris_udf::BigIntVal& num,
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const doris_udf::TinyIntVal& src_base,
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const doris_udf::TinyIntVal& dest_base);
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static doris_udf::StringVal conv_string(doris_udf::FunctionContext* ctx,
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const doris_udf::StringVal& num_str,
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const doris_udf::TinyIntVal& src_base,
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const doris_udf::TinyIntVal& dest_base);
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static doris_udf::BigIntVal pmod_bigint(doris_udf::FunctionContext* ctx,
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const doris_udf::BigIntVal& a,
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const doris_udf::BigIntVal& b);
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static doris_udf::DoubleVal pmod_double(doris_udf::FunctionContext* ctx,
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const doris_udf::DoubleVal& a,
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const doris_udf::DoubleVal& b);
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static doris_udf::FloatVal fmod_float(doris_udf::FunctionContext*, const doris_udf::FloatVal&,
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const doris_udf::FloatVal&);
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static doris_udf::DoubleVal fmod_double(doris_udf::FunctionContext*,
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const doris_udf::DoubleVal&,
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const doris_udf::DoubleVal&);
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static doris_udf::BigIntVal positive_bigint(doris_udf::FunctionContext* ctx,
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const doris_udf::BigIntVal& val);
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static doris_udf::DoubleVal positive_double(doris_udf::FunctionContext* ctx,
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const doris_udf::DoubleVal& val);
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static doris_udf::DecimalV2Val positive_decimal(doris_udf::FunctionContext* ctx,
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const doris_udf::DecimalV2Val& val);
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static doris_udf::BigIntVal negative_bigint(doris_udf::FunctionContext* ctx,
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const doris_udf::BigIntVal& val);
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static doris_udf::DoubleVal negative_double(doris_udf::FunctionContext* ctx,
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const doris_udf::DoubleVal& val);
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static doris_udf::DecimalV2Val negative_decimal(doris_udf::FunctionContext* ctx,
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const doris_udf::DecimalV2Val& val);
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static doris_udf::TinyIntVal least(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::TinyIntVal* args);
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static doris_udf::TinyIntVal greatest(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::TinyIntVal* args);
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static doris_udf::SmallIntVal least(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::SmallIntVal* val);
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static doris_udf::SmallIntVal greatest(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::SmallIntVal* val);
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static doris_udf::IntVal least(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::IntVal* val);
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static doris_udf::IntVal greatest(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::IntVal* val);
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static doris_udf::BigIntVal least(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::BigIntVal* val);
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static doris_udf::BigIntVal greatest(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::BigIntVal* val);
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static doris_udf::LargeIntVal least(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::LargeIntVal* val);
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static doris_udf::LargeIntVal greatest(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::LargeIntVal* val);
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static doris_udf::FloatVal least(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::FloatVal* val);
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static doris_udf::FloatVal greatest(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::FloatVal* val);
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static doris_udf::DoubleVal least(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::DoubleVal* val);
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static doris_udf::DoubleVal greatest(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::DoubleVal* val);
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static doris_udf::StringVal least(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::StringVal* val);
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static doris_udf::StringVal greatest(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::StringVal* val);
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static doris_udf::DateTimeVal least(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::DateTimeVal* val);
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static doris_udf::DateTimeVal greatest(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::DateTimeVal* val);
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static doris_udf::DecimalV2Val least(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::DecimalV2Val* val);
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static doris_udf::DecimalV2Val greatest(doris_udf::FunctionContext* ctx, int num_args,
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const doris_udf::DecimalV2Val* val);
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static double my_double_round(double value, int64_t dec, bool dec_unsigned, bool truncate);
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// Converts src_num in decimal to dest_base,
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// and fills expr_val.string_val with the result.
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static doris_udf::StringVal decimal_to_base(doris_udf::FunctionContext* ctx, int64_t src_num,
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int8_t dest_base);
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// Converts src_num representing a number in src_base but encoded in decimal
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// into its actual decimal number.
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// For example, if src_num is 21 and src_base is 5,
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// then this function sets *result to 2*5^1 + 1*5^0 = 11.
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// Returns false if overflow occurred, true upon success.
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static bool decimal_in_base_to_decimal(int64_t src_num, int8_t src_base, int64_t* result);
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// Helper function used in Conv to implement behavior consistent
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// with MySQL and Hive in case of numeric overflow during Conv.
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// Inspects parse_res, and in case of overflow sets num to MAXINT64 if dest_base
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// is positive, otherwise to -1.
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// Returns true if no parse_res == PARSE_SUCCESS || parse_res == PARSE_OVERFLOW.
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// Returns false otherwise, indicating some other error condition.
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static bool handle_parse_result(int8_t dest_base, int64_t* num,
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StringParser::ParseResult parse_res);
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static const int32_t MIN_BASE = 2;
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static const int32_t MAX_BASE = 36;
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private:
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static const char* _s_alphanumeric_chars;
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};
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} // namespace doris
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#endif
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