| // 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 |