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+// Copyright 2010 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.
+
+#include "textflag.h"
+
+// func Log(x float64) float64
+TEXT ·Log(SB),NOSPLIT,$0
+ FLDLN2 // F0=log(2)
+ FMOVD x+0(FP), F0 // F0=x, F1=log(2)
+ FYL2X // F0=log(x)=log2(x)*log(2)
+ FMOVDP F0, ret+8(FP)
+ RET