blob: 17044861c7f074942d3b1538bdc45828bf6ce61d [file] [log] [blame]
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// ARM64-specific hardware-assisted CRC32 algorithms. See crc32.go for a
// description of the interface that each architecture-specific file
// implements.
package crc32
func supportsCRC32() bool
func castagnoliUpdate(crc uint32, p []byte) uint32
func ieeeUpdate(crc uint32, p []byte) uint32
var hasCRC32 = supportsCRC32()
func archAvailableCastagnoli() bool {
return hasCRC32
}
func archInitCastagnoli() {
if !hasCRC32 {
panic("arch-specific crc32 instruction for Catagnoli not available")
}
}
func archUpdateCastagnoli(crc uint32, p []byte) uint32 {
if !hasCRC32 {
panic("arch-specific crc32 instruction for Castagnoli not available")
}
return ^castagnoliUpdate(^crc, p)
}
func archAvailableIEEE() bool {
return hasCRC32
}
func archInitIEEE() {
if !hasCRC32 {
panic("arch-specific crc32 instruction for IEEE not available")
}
}
func archUpdateIEEE(crc uint32, p []byte) uint32 {
if !hasCRC32 {
panic("arch-specific crc32 instruction for IEEE not available")
}
return ^ieeeUpdate(^crc, p)
}