1#include <Functions/FunctionFactory.h>
2#include <Functions/FunctionBinaryArithmetic.h>
3#include <common/arithmeticOverflow.h>
4
5namespace DB
6{
7
8template <typename A, typename B>
9struct PlusImpl
10{
11 using ResultType = typename NumberTraits::ResultOfAdditionMultiplication<A, B>::Type;
12 static const constexpr bool allow_decimal = true;
13
14 template <typename Result = ResultType>
15 static inline NO_SANITIZE_UNDEFINED Result apply(A a, B b)
16 {
17 /// Next everywhere, static_cast - so that there is no wrong result in expressions of the form Int64 c = UInt32(a) * Int32(-1).
18 return static_cast<Result>(a) + b;
19 }
20
21 /// Apply operation and check overflow. It's used for Deciamal operations. @returns true if overflowed, false otherwise.
22 template <typename Result = ResultType>
23 static inline bool apply(A a, B b, Result & c)
24 {
25 return common::addOverflow(static_cast<Result>(a), b, c);
26 }
27
28#if USE_EMBEDDED_COMPILER
29 static constexpr bool compilable = true;
30
31 static inline llvm::Value * compile(llvm::IRBuilder<> & b, llvm::Value * left, llvm::Value * right, bool)
32 {
33 return left->getType()->isIntegerTy() ? b.CreateAdd(left, right) : b.CreateFAdd(left, right);
34 }
35#endif
36};
37
38struct NamePlus { static constexpr auto name = "plus"; };
39using FunctionPlus = FunctionBinaryArithmetic<PlusImpl, NamePlus>;
40
41void registerFunctionPlus(FunctionFactory & factory)
42{
43 factory.registerFunction<FunctionPlus>();
44}
45
46}
47