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hash/maphash: move purego-only helper functions to build tagged file

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Hash.float64 and btoi helper functions are used only in the purego
version. Move them to the build tagged file.

Change-Id: I57f9a48966573ab0aee1de759eeddd2331967870
Reviewed-on: https://go-review.googlesource.com/c/go/+/675158
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Cherry Mui 2025-05-21 22:50:09 -04:00
parent 5e6a868b28
commit d2db2372a2
2 changed files with 23 additions and 24 deletions
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24
src/hash/maphash/maphash.go
View File

@ -15,8 +15,6 @@ package maphash
import (
"hash"
"internal/abi"
"internal/byteorder"
"math"
)
// A Seed is a random value that selects the specific hash function
@ -310,25 +308,3 @@ func WriteComparable[T comparable](h *Hash, x T) {
}
writeComparable(h, x)
}
func (h *Hash) float64(f float64) {
if f == 0 {
h.WriteByte(0)
return
}
var buf [8]byte
if f != f {
byteorder.LEPutUint64(buf[:], randUint64())
h.Write(buf[:])
return
}
byteorder.LEPutUint64(buf[:], math.Float64bits(f))
h.Write(buf[:])
}
func btoi(b bool) byte {
if b {
return 1
}
return 0
}

23
src/hash/maphash/maphash_purego.go
View File

@ -10,6 +10,7 @@ import (
"crypto/rand"
"errors"
"internal/byteorder"
"math"
"math/bits"
"reflect"
)
@ -175,3 +176,25 @@ func appendT(h *Hash, v reflect.Value) {
}
panic(errors.New("maphash: hash of unhashable type " + v.Type().String()))
}
func (h *Hash) float64(f float64) {
if f == 0 {
h.WriteByte(0)
return
}
var buf [8]byte
if f != f {
byteorder.LEPutUint64(buf[:], randUint64())
h.Write(buf[:])
return
}
byteorder.LEPutUint64(buf[:], math.Float64bits(f))
h.Write(buf[:])
}
func btoi(b bool) byte {
if b {
return 1
}
return 0
}