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52 lines
1.2 KiB
ArmAsm
52 lines
1.2 KiB
ArmAsm
/* Compute positive difference.
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Copyright (C) 1997-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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.text
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ENTRY(__fdimf)
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flds 4(%esp) // x
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flds 8(%esp) // x : y
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fucom %st(1)
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fnstsw
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sahf
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jp 1f
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jc 3f
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fstp %st(1)
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fldz
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jmp 2f
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3: fsubrp %st, %st(1)
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ret
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1: fxam
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fnstsw
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andb $0x45, %ah
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cmpb $0x01, %ah
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je 2f
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fxch
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2: fstp %st(1)
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ret
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END(__fdimf)
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weak_alias (__fdimf, fdimf)
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