mirror of
https://github.com/golang/go
synced 2024-10-01 22:28:33 -06:00
519474451a
This is a subset of https://golang.org/cl/20022 with only the copyright header lines, so the next CL will be smaller and more reviewable. Go policy has been single space after periods in comments for some time. The copyright header template at: https://golang.org/doc/contribute.html#copyright also uses a single space. Make them all consistent. Change-Id: Icc26c6b8495c3820da6b171ca96a74701b4a01b0 Reviewed-on: https://go-review.googlesource.com/20111 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
47 lines
1.5 KiB
ArmAsm
47 lines
1.5 KiB
ArmAsm
// 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 Ceil(x float64) float64
|
|
TEXT ·Ceil(SB),NOSPLIT,$0
|
|
FMOVD x+0(FP), F0 // F0=x
|
|
FSTCW -2(SP) // save old Control Word
|
|
MOVW -2(SP), AX
|
|
ANDW $0xf3ff, AX
|
|
ORW $0x0800, AX // Rounding Control set to +Inf
|
|
MOVW AX, -4(SP) // store new Control Word
|
|
FLDCW -4(SP) // load new Control Word
|
|
FRNDINT // F0=Ceil(x)
|
|
FLDCW -2(SP) // load old Control Word
|
|
FMOVDP F0, ret+8(FP)
|
|
RET
|
|
|
|
// func Floor(x float64) float64
|
|
TEXT ·Floor(SB),NOSPLIT,$0
|
|
FMOVD x+0(FP), F0 // F0=x
|
|
FSTCW -2(SP) // save old Control Word
|
|
MOVW -2(SP), AX
|
|
ANDW $0xf3ff, AX
|
|
ORW $0x0400, AX // Rounding Control set to -Inf
|
|
MOVW AX, -4(SP) // store new Control Word
|
|
FLDCW -4(SP) // load new Control Word
|
|
FRNDINT // F0=Floor(x)
|
|
FLDCW -2(SP) // load old Control Word
|
|
FMOVDP F0, ret+8(FP)
|
|
RET
|
|
|
|
// func Trunc(x float64) float64
|
|
TEXT ·Trunc(SB),NOSPLIT,$0
|
|
FMOVD x+0(FP), F0 // F0=x
|
|
FSTCW -2(SP) // save old Control Word
|
|
MOVW -2(SP), AX
|
|
ORW $0x0c00, AX // Rounding Control set to truncate
|
|
MOVW AX, -4(SP) // store new Control Word
|
|
FLDCW -4(SP) // load new Control Word
|
|
FRNDINT // F0=Trunc(x)
|
|
FLDCW -2(SP) // load old Control Word
|
|
FMOVDP F0, ret+8(FP)
|
|
RET
|