github.com/cockroachdb/pebble@v0.0.0-20231214172447-ab4952c5f87b/internal/constants/constants.go (about)

     1  // Copyright 2023 The LevelDB-Go and Pebble Authors. All rights reserved. Use
     2  // of this source code is governed by a BSD-style license that can be found in
     3  // the LICENSE file.
     4  
     5  package constants
     6  
     7  const (
     8  	// oneIf64Bit is 1 on 64-bit platforms and 0 on 32-bit platforms.
     9  	oneIf64Bit = ^uint(0) >> 63
    10  
    11  	// MaxUint32OrInt returns min(MaxUint32, MaxInt), i.e
    12  	// - MaxUint32 on 64-bit platforms;
    13  	// - MaxInt on 32-bit platforms.
    14  	// It is used when slices are limited to Uint32 on 64-bit platforms (the
    15  	// length limit for slices is naturally MaxInt on 32-bit platforms).
    16  	MaxUint32OrInt = (1<<31)<<oneIf64Bit - 1
    17  )