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#include "mkql_builtins_decimal.h" // Y_IGNORE
namespace NKikimr {
namespace NMiniKQL {
namespace {
template<typename TInput, typename TOutput>
struct TDecrement : public TSimpleArithmeticUnary<TInput, TOutput, TDecrement<TInput, TOutput>> {
static TOutput Do(TInput val)
{
return --val;
}
#ifndef MKQL_DISABLE_CODEGEN
static Value* Gen(Value* arg, const TCodegenContext&, BasicBlock*& block)
{
return std::is_integral<TOutput>() ?
BinaryOperator::CreateSub(arg, ConstantInt::get(arg->getType(), 1), "dec", block):
BinaryOperator::CreateFSub(arg, ConstantFP::get(arg->getType(), 1.0), "dec", block);
}
#endif
};
template <ui8 Precision>
struct TDecimalDec {
static NUdf::TUnboxedValuePod Execute(const NUdf::TUnboxedValuePod& arg) {
auto v = arg.GetInt128();
using namespace NYql::NDecimal;
const auto& bounds = GetBounds<Precision, true, false>();
if (v > bounds.first && v < bounds.second)
return NUdf::TUnboxedValuePod(--v);
return NUdf::TUnboxedValuePod(IsNan(v) ? Nan() : (v > 0 ? +Inf() : -Inf()));
}
#ifndef MKQL_DISABLE_CODEGEN
static Value* Generate(Value* arg, const TCodegenContext& ctx, BasicBlock*& block)
{
auto& context = ctx.Codegen.GetContext();
const auto& bounds = NDecimal::GenBounds<Precision, true, false>(context);
const auto val = GetterForInt128(arg, block);
const auto sub = BinaryOperator::CreateSub(val, ConstantInt::get(val->getType(), 1), "sub", block);
const auto gt = CmpInst::Create(Instruction::ICmp, FCmpInst::ICMP_SGT, sub, bounds.first, "gt", block);
const auto lt = CmpInst::Create(Instruction::ICmp, FCmpInst::ICMP_SLT, val, bounds.second, "lt", block);
const auto good = BinaryOperator::CreateAnd(lt, gt, "and", block);
const auto nan = NDecimal::GenIsNonComparable(val, context, block);
const auto plus = CmpInst::Create(Instruction::ICmp, ICmpInst::ICMP_SGT, val, ConstantInt::get(val->getType(), 0), "plus", block);
const auto inf = SelectInst::Create(plus, GetDecimalPlusInf(context), GetDecimalMinusInf(context), "inf", block);
const auto bad = SelectInst::Create(nan, GetDecimalNan(context), inf, "bad", block);
const auto dec = SelectInst::Create(good, sub, bad, "dec", block);
return SetterForInt128(dec, block);
}
#endif
static_assert(Precision <= NYql::NDecimal::MaxPrecision, "Too large precision!");
};
}
void RegisterDecrement(IBuiltinFunctionRegistry& registry) {
RegisterUnaryNumericFunctionOpt<TDecrement, TUnaryArgsOpt>(registry, "Decrement");
NDecimal::RegisterUnaryFunctionForAllPrecisions<TDecimalDec, TUnaryArgsOpt>(registry, "Dec_");
}
} // namespace NMiniKQL
} // namespace NKikimr
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