1#include <Functions/FunctionFactory.h>
2#include <Functions/FunctionBinaryArithmetic.h>
3
4namespace DB
5{
6
7template <typename A, typename B>
8struct BitShiftRightImpl
9{
10 using ResultType = typename NumberTraits::ResultOfBit<A, B>::Type;
11
12 template <typename Result = ResultType>
13 static inline NO_SANITIZE_UNDEFINED Result apply(A a, B b)
14 {
15 return static_cast<Result>(a) >> static_cast<Result>(b);
16 }
17
18#if USE_EMBEDDED_COMPILER
19 static constexpr bool compilable = true;
20
21 static inline llvm::Value * compile(llvm::IRBuilder<> & b, llvm::Value * left, llvm::Value * right, bool is_signed)
22 {
23 if (!left->getType()->isIntegerTy())
24 throw Exception("BitShiftRightImpl expected an integral type", ErrorCodes::LOGICAL_ERROR);
25 return is_signed ? b.CreateAShr(left, right) : b.CreateLShr(left, right);
26 }
27#endif
28};
29
30struct NameBitShiftRight { static constexpr auto name = "bitShiftRight"; };
31using FunctionBitShiftRight = FunctionBinaryArithmetic<BitShiftRightImpl, NameBitShiftRight>;
32
33void registerFunctionBitShiftRight(FunctionFactory & factory)
34{
35 factory.registerFunction<FunctionBitShiftRight>();
36}
37
38}
39