| // 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. | |
| // func Atan(x float64) float64 | |
| TEXT ·Atan(SB),7,$0 | |
| FMOVD x+0(FP), F0 // F0=x | |
| FLD1 // F0=1, F1=x | |
| FPATAN // F0=atan(F1/F0) | |
| FMOVDP F0, r+8(FP) | |
| RET |