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#include <Functions/FunctionFactory.h>
#include <Functions/FunctionUnaryArithmetic.h>
#include <DataTypes/NumberTraits.h>
namespace DB
{
template <typename A>
struct NegateImpl
{
using ResultType = std::conditional_t<is_decimal<A>, A, typename NumberTraits::ResultOfNegate<A>::Type>;
static constexpr const bool allow_string_or_fixed_string = false;
static inline NO_SANITIZE_UNDEFINED ResultType apply(A a)
{
return -static_cast<ResultType>(a);
}
#if USE_EMBEDDED_COMPILER
static constexpr bool compilable = true;
static inline llvm::Value * compile(llvm::IRBuilder<> & b, llvm::Value * arg, bool)
{
return arg->getType()->isIntegerTy() ? b.CreateNeg(arg) : b.CreateFNeg(arg);
}
#endif
};
struct NameNegate { static constexpr auto name = "negate"; };
using FunctionNegate = FunctionUnaryArithmetic<NegateImpl, NameNegate, true>;
template <> struct FunctionUnaryArithmeticMonotonicity<NameNegate>
{
static bool has() { return true; }
static IFunction::Monotonicity get(const Field &, const Field &)
{
return { .is_monotonic = true, .is_positive = false, .is_strict = true };
}
};
REGISTER_FUNCTION(Negate)
{
factory.registerFunction<FunctionNegate>();
}
}
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