github.com/apache/arrow/go/v14@v14.0.2/internal/utils/min_max_neon_arm64.go (about)

     1  // Licensed to the Apache Software Foundation (ASF) under one
     2  // or more contributor license agreements.  See the NOTICE file
     3  // distributed with this work for additional information
     4  // regarding copyright ownership.  The ASF licenses this file
     5  // to you under the Apache License, Version 2.0 (the
     6  // "License"); you may not use this file except in compliance
     7  // with 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  //go:build !noasm
    18  
    19  package utils
    20  
    21  import "unsafe"
    22  
    23  // This file contains convenience functions for utilizing Arm64 Neon intrinsics to quickly
    24  // and efficiently get the min and max from an integral slice.
    25  
    26  //go:noescape
    27  func _int32_max_min_neon(values unsafe.Pointer, length int, minout, maxout unsafe.Pointer)
    28  
    29  func int32MaxMinNEON(values []int32) (min, max int32) {
    30  	_int32_max_min_neon(unsafe.Pointer(&values[0]), len(values), unsafe.Pointer(&min), unsafe.Pointer(&max))
    31  	return
    32  }
    33  
    34  //go:noescape
    35  func _uint32_max_min_neon(values unsafe.Pointer, length int, minout, maxout unsafe.Pointer)
    36  
    37  func uint32MaxMinNEON(values []uint32) (min, max uint32) {
    38  	_uint32_max_min_neon(unsafe.Pointer(&values[0]), len(values), unsafe.Pointer(&min), unsafe.Pointer(&max))
    39  	return
    40  }
    41  
    42  //go:noescape
    43  func _int64_max_min_neon(values unsafe.Pointer, length int, minout, maxout unsafe.Pointer)
    44  
    45  func int64MaxMinNEON(values []int64) (min, max int64) {
    46  	_int64_max_min_neon(unsafe.Pointer(&values[0]), len(values), unsafe.Pointer(&min), unsafe.Pointer(&max))
    47  	return
    48  }
    49  
    50  //go:noescape
    51  func _uint64_max_min_neon(values unsafe.Pointer, length int, minout, maxout unsafe.Pointer)
    52  
    53  func uint64MaxMinNEON(values []uint64) (min, max uint64) {
    54  	_uint64_max_min_neon(unsafe.Pointer(&values[0]), len(values), unsafe.Pointer(&min), unsafe.Pointer(&max))
    55  	return
    56  }