| // 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 Atan2(y, x float64) float64 // =atan(y/x) | |
| TEXT ·Atan2(SB),NOSPLIT,$0 | |
| FMOVD y+0(FP), F0 // F0=y | |
| FMOVD x+8(FP), F0 // F0=x, F1=y | |
| FPATAN // F0=atan(F1/F0) | |
| FMOVDP F0, ret+16(FP) | |
| RET |