#
#  Copyright 2016, 2017 Michele "King_DuckZ" Santullo

#  This file is part of MyCurry.

#  MyCurry is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  (at your option) any later version.

#  MyCurry is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.

#  You should have received a copy of the GNU General Public License
#  along with MyCurry.  If not, see <http://www.gnu.org/licenses/>.
#

.data
minus1: .float -1.0

.global fsgn_asm

.text
fsgn_asm:
	subq $24,%rsp
	movss %xmm0,(%rsp)
	fldz
	flds (%rsp)
	fcomp

	fstsw %ax
	sahf

	fld1
	fld minus1

	fcmovnbe %st(1),%st
	fcmove %st(2),%st

	fstps (%rsp)
	fninit
	movss (%rsp),%xmm0

	#xorpd %xmm0,%xmm0
	addq $24,%rsp
	ret