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go/src/math/abs_amd64.s
Russ Cox c007ce824d build: move package sources from src/pkg to src
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.
2014-09-08 00:08:51 -04:00

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360 B
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 Abs(x float64) float64
TEXT ·Abs(SB),NOSPLIT,$0
MOVQ $(1<<63), BX
MOVQ BX, X0 // movsd $(-0.0), x0
MOVSD x+0(FP), X1
ANDNPD X1, X0
MOVSD X0, ret+8(FP)
RET