48 lines
1,005 B
ArmAsm
48 lines
1,005 B
ArmAsm
#
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# Copyright 2016, 2017 Michele "King_DuckZ" Santullo
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# This file is part of MyCurry.
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# MyCurry is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# MyCurry is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with MyCurry. If not, see <http://www.gnu.org/licenses/>.
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#
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.data
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minus1: .float -1.0
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.global fsgn_asm
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.text
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fsgn_asm:
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subq $24,%rsp
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movss %xmm0,(%rsp)
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fldz
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flds (%rsp)
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fcomp
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fstsw %ax
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sahf
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fld1
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fld minus1
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fcmovnbe %st(1),%st
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fcmove %st(2),%st
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fstps (%rsp)
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fninit
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movss (%rsp),%xmm0
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#xorpd %xmm0,%xmm0
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addq $24,%rsp
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ret
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