40 lines
1.5 KiB
C
40 lines
1.5 KiB
C
|
/* Fused multiply-add of _Float128 value, converting the result to _Float64x.
|
||
|
|
Copyright (C) 2021-2022 Free Software Foundation, Inc.
|
||
|
|
This file is part of the GNU C Library.
|
||
|
|
|
||
|
|
The GNU C Library is free software; you can redistribute it and/or
|
||
|
|
modify it under the terms of the GNU Lesser General Public
|
||
|
|
License as published by the Free Software Foundation; either
|
||
|
|
version 2.1 of the License, or (at your option) any later version.
|
||
|
|
|
||
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
Lesser General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Lesser General Public
|
||
|
|
License along with the GNU C Library; if not, see
|
||
|
|
<https://www.gnu.org/licenses/>. */
|
||
|
|
|
||
|
|
#include <math.h>
|
||
|
|
#include <math-narrow.h>
|
||
|
|
#include <tininess.h>
|
||
|
|
|
||
|
|
/* math_ldbl.h defines _Float128 to long double for this directory,
|
||
|
|
but when they are different, this function must be defined with
|
||
|
|
_Float128 arguments to avoid defining an alias with an incompatible
|
||
|
|
type. */
|
||
|
|
#undef _Float128
|
||
|
|
|
||
|
|
#if __HAVE_FLOAT64X_LONG_DOUBLE && __HAVE_DISTINCT_FLOAT128
|
||
|
|
_Float64x
|
||
|
|
__f64xfmaf128 (_Float128 x, _Float128 y, _Float128 z)
|
||
|
|
{
|
||
|
|
NARROW_FMA_ROUND_TO_ODD (x, y, z, _Float64x, union ieee854_long_double, l,
|
||
|
|
mantissa3, TININESS_AFTER_ROUNDING);
|
||
|
|
}
|
||
|
|
libm_alias_float64x_float128 (fma)
|
||
|
|
#else
|
||
|
|
/* Defined as an alias of fmal. */
|
||
|
|
#endif
|