mirror of
https://github.com/golang/go
synced 2024-11-19 13:04:45 -07:00
c007ce824d
Preparation was in CL 134570043. This CL contains only the effect of 'hg mv src/pkg/* src'. For more about the move, see golang.org/s/go14nopkg.
48 lines
1.5 KiB
ArmAsm
48 lines
1.5 KiB
ArmAsm
// Copyright 2009 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 Cos(x float64) float64
|
|
TEXT ·Cos(SB),NOSPLIT,$0
|
|
FMOVD x+0(FP), F0 // F0=x
|
|
FCOS // F0=cos(x) if -2**63 < x < 2**63
|
|
FSTSW AX // AX=status word
|
|
ANDW $0x0400, AX
|
|
JNE 3(PC) // jump if x outside range
|
|
FMOVDP F0, ret+8(FP)
|
|
RET
|
|
FLDPI // F0=Pi, F1=x
|
|
FADDD F0, F0 // F0=2*Pi, F1=x
|
|
FXCHD F0, F1 // F0=x, F1=2*Pi
|
|
FPREM1 // F0=reduced_x, F1=2*Pi
|
|
FSTSW AX // AX=status word
|
|
ANDW $0x0400, AX
|
|
JNE -3(PC) // jump if reduction incomplete
|
|
FMOVDP F0, F1 // F0=reduced_x
|
|
FCOS // F0=cos(reduced_x)
|
|
FMOVDP F0, ret+8(FP)
|
|
RET
|
|
|
|
// func Sin(x float64) float64
|
|
TEXT ·Sin(SB),NOSPLIT,$0
|
|
FMOVD x+0(FP), F0 // F0=x
|
|
FSIN // F0=sin(x) if -2**63 < x < 2**63
|
|
FSTSW AX // AX=status word
|
|
ANDW $0x0400, AX
|
|
JNE 3(PC) // jump if x outside range
|
|
FMOVDP F0, ret+8(FP)
|
|
RET
|
|
FLDPI // F0=Pi, F1=x
|
|
FADDD F0, F0 // F0=2*Pi, F1=x
|
|
FXCHD F0, F1 // F0=x, F1=2*Pi
|
|
FPREM1 // F0=reduced_x, F1=2*Pi
|
|
FSTSW AX // AX=status word
|
|
ANDW $0x0400, AX
|
|
JNE -3(PC) // jump if reduction incomplete
|
|
FMOVDP F0, F1 // F0=reduced_x
|
|
FSIN // F0=sin(reduced_x)
|
|
FMOVDP F0, ret+8(FP)
|
|
RET
|