github.com/dubbogo/gost@v1.14.0/math/base_funcs.go (about)

     1  /*
     2   * Licensed to the Apache Software Foundation (ASF) under one or more
     3   * contributor license agreements.  See the NOTICE file distributed with
     4   * this work for additional information regarding copyright ownership.
     5   * The ASF licenses this file to You under the Apache License, Version 2.0
     6   * (the "License"); you may not use this file except in compliance with
     7   * the License.  You may obtain a copy of the License at
     8   *
     9   *     http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  
    18  package gxmath
    19  
    20  // AbsInt64 abs of int64
    21  func AbsInt64(n int64) int64 {
    22  	y := n >> 63
    23  	return (n ^ y) - y
    24  }
    25  
    26  // AbsInt32 abs of int32
    27  func AbsInt32(n int32) int32 {
    28  	y := n >> 31
    29  	return (n ^ y) - y
    30  }
    31  
    32  // AbsInt16 abs of int16
    33  func AbsInt16(n int16) int16 {
    34  	y := n >> 15
    35  	return (n ^ y) - y
    36  }
    37  
    38  // AbsInt8 abs of int8
    39  func AbsInt8(n int8) int8 {
    40  	y := n >> 7
    41  	return (n ^ y) - y
    42  }