golang log_asm 代码
文件路径：/src/math/log_asm.go
/ Copyright 2021 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.
/go:build amd64 || s390x
package math
const haveArchLog = true
func archLog(x float64) float64