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Adhemerval Zanella
822bb11278
The functions are documented to behave like fmax/fmin when the arguments have the same absolute value. Checked on x86_64-linux-gnu, aarch64-linux-gnu, i686-linux-gnu, arm-linux-gnueabihf, powerpc64le-linux-gnu, riscv64-linux-gnu-rv64imafdc-lp64d, and loongarch64-linux-gnuf64. Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/* Return value with minimum magnitude.
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Copyright (C) 2016-2026 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 <math.h>
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FLOAT
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M_DECL_FUNC (__fminmag) (FLOAT x, FLOAT y)
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{
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if (__glibc_likely (!isunordered (x, y)))
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{
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FLOAT ax = M_FABS (x);
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FLOAT ay = M_FABS (y);
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if (__glibc_unlikely (ax == ay))
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return signbit (x) ? x : y;
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return isless (ax, ay) ? x : y;
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}
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else if (issignaling (x) || issignaling (y))
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return x + y;
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else
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return isnan (y) ? x : y;
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}
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declare_mgen_alias (__fminmag, fminmag);
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