go/src/pkg/math/atan_386.s

// 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 math·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
math: 386 FPU functions sin, cos, tan, asin, acos, atan, exp, log, log10, floor, ceil, and fabs R=rsc CC=golang-dev https://golang.org/cl/189083 2010-01-15 14:21:36 -07:00			`// 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 math·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`