1#include <Functions/FunctionFactory.h>
2#include <Functions/FunctionUnaryArithmetic.h>
3#include <DataTypes/NumberTraits.h>
4
5namespace DB
6{
7
8template <typename A>
9struct NegateImpl
10{
11 using ResultType = std::conditional_t<IsDecimalNumber<A>, A, typename NumberTraits::ResultOfNegate<A>::Type>;
12
13 static inline NO_SANITIZE_UNDEFINED ResultType apply(A a)
14 {
15 return -static_cast<ResultType>(a);
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 * arg, bool)
22 {
23 return arg->getType()->isIntegerTy() ? b.CreateNeg(arg) : b.CreateFNeg(arg);
24 }
25#endif
26};
27
28struct NameNegate { static constexpr auto name = "negate"; };
29using FunctionNegate = FunctionUnaryArithmetic<NegateImpl, NameNegate, true>;
30
31template <> struct FunctionUnaryArithmeticMonotonicity<NameNegate>
32{
33 static bool has() { return true; }
34 static IFunction::Monotonicity get(const Field &, const Field &)
35 {
36 return { true, false };
37 }
38};
39
40void registerFunctionNegate(FunctionFactory & factory)
41{
42 factory.registerFunction<FunctionNegate>();
43}
44
45}
46