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012483cf93
RISC-V's fmax(sNAN,4) returns 4 but glibc expects it to return qNAN.
* sysdeps/riscv/rvd/s_fmax.c (__fmax): Handle sNaNs correctly.
* sysdeps/riscv/rvd/s_fmin.c (__fmin): Likewise.
* sysdeps/riscv/rvf/s_fmaxf.c (__fmaxf): Likewise.
* sysdeps/riscv/rvf/s_fminf.c (__fminf): Likewise.
(cherry picked from commit fdcc625376)
36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
/* fmax(). RISC-V version.
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Copyright (C) 2017-2018 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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<http://www.gnu.org/licenses/>. */
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#include <math.h>
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#include <math_private.h>
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#include <libm-alias-double.h>
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double
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__fmax (double x, double y)
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{
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double res;
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if (__glibc_unlikely ((_FCLASS (x) | _FCLASS (y)) & _FCLASS_SNAN))
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return x + y;
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else
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asm ("fmax.d %0, %1, %2" : "=f" (res) : "f" (x), "f" (y));
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return res;
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}
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libm_alias_double (__fmax, fmax)
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