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40 lines
1.1 KiB
ArmAsm
40 lines
1.1 KiB
ArmAsm
/* Compute maximum of two numbers, regarding NaN as missing argument.
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Copyright (C) 1997-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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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<https://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <libm-alias-float.h>
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.text
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ENTRY(__fmaxf)
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flds 4(%esp) // x
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flds 8(%esp) // x : y
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fucomi %st(0), %st
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fcmovu %st(1), %st // now %st contains y if not NaN, x otherwise
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fxch
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fucomi %st(1), %st
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fcmovb %st(1), %st
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fstp %st(1)
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ret
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END(__fmaxf)
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libm_alias_float (__fmax, fmax)
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