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42 lines
898 B
C++
42 lines
898 B
C++
#include <Functions/FunctionMathUnary.h>
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#include <Functions/FunctionFactory.h>
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namespace DB
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{
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namespace
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{
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struct LogName { static constexpr auto name = "log"; };
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#if USE_FASTOPS
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struct Impl
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{
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static constexpr auto name = LogName::name;
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static constexpr auto rows_per_iteration = 0;
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static constexpr bool always_returns_float64 = false;
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template <typename T>
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static void execute(const T * src, size_t size, T * dst)
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{
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NFastOps::Log<true>(src, size, dst);
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}
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};
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using FunctionLog = FunctionMathUnary<Impl>;
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#else
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using FunctionLog = FunctionMathUnary<UnaryFunctionVectorized<LogName, log>>;
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#endif
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}
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void registerFunctionLog(FunctionFactory & factory)
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{
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factory.registerFunction<FunctionLog>(FunctionFactory::CaseInsensitive);
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factory.registerAlias("ln", "log", FunctionFactory::CaseInsensitive);
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}
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}
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