github.com/matrixorigin/matrixone@v0.7.0/pkg/vectorize/neg/neg.go (about)

     1  // Copyright 2021 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package neg
    16  
    17  import (
    18  	"github.com/matrixorigin/matrixone/pkg/container/types"
    19  	"golang.org/x/exp/constraints"
    20  )
    21  
    22  var (
    23  	Int8Neg    = NumericNeg[int8]
    24  	Int16Neg   = NumericNeg[int16]
    25  	Int32Neg   = NumericNeg[int32]
    26  	Int64Neg   = NumericNeg[int64]
    27  	Float32Neg = NumericNeg[float32]
    28  	Float64Neg = NumericNeg[float64]
    29  )
    30  
    31  func NumericNeg[T constraints.Signed | constraints.Float](xs, rs []T) []T {
    32  	for i, x := range xs {
    33  		rs[i] = -x
    34  	}
    35  	return rs
    36  }
    37  
    38  func Decimal64Neg(xs, rs []types.Decimal64) []types.Decimal64 {
    39  	for i, x := range xs {
    40  		rs[i] = types.Decimal64_Zero.Sub(x)
    41  	}
    42  	return rs
    43  }
    44  
    45  func Decimal128Neg(xs, rs []types.Decimal128) []types.Decimal128 {
    46  	for i, x := range xs {
    47  		rs[i] = types.NegDecimal128(x)
    48  	}
    49  	return rs
    50  }