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35 lines
907 B
C++
35 lines
907 B
C++
#pragma once
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#include <DataTypes/DataTypesNumber.h>
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#include <Columns/ColumnsNumber.h>
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#include <Functions/IFunctionImpl.h>
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namespace DB
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{
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template <typename Impl>
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class FunctionMathConstFloat64 : public IFunction
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{
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public:
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static constexpr auto name = Impl::name;
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static FunctionPtr create(const Context &) { return std::make_shared<FunctionMathConstFloat64>(); }
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private:
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String getName() const override { return name; }
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size_t getNumberOfArguments() const override { return 0; }
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DataTypePtr getReturnTypeImpl(const DataTypes & /*arguments*/) const override
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{
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return std::make_shared<DataTypeFloat64>();
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}
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void executeImpl(Block & block, const ColumnNumbers &, size_t result, size_t input_rows_count) override
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{
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block.getByPosition(result).column = block.getByPosition(result).type->createColumnConst(input_rows_count, Impl::value);
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}
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};
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}
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