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/* Fused multiply-add of long double (ldbl-128) values, narrowing the result to
float, using soft-fp.
Copyright (C) 2021 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/>. */
#define f32fmaf64x __hide_f32fmaf64x
#define f32fmaf128 __hide_f32fmaf128
#include <math.h>
#undef f32fmaf64x
#undef f32fmaf128
#include <math-narrow.h>
#include <libc-diag.h>
/* R_e is not set in cases where it is not used in packing, but the
compiler does not see that it is set in all cases where it is
used, resulting in warnings that it may be used uninitialized.
The location of the warning differs in different versions of GCC,
it may be where R is defined using a macro or it may be where the
macro is defined. */
DIAG_PUSH_NEEDS_COMMENT;
DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wmaybe-uninitialized");
#include <soft-fp.h>
#include <single.h>
#include <quad.h>
float
__ffmal (_Float128 x, _Float128 y, _Float128 z)
{
FP_DECL_EX;
FP_DECL_Q (X);
FP_DECL_Q (Y);
FP_DECL_Q (Z);
FP_DECL_Q (R);
FP_DECL_S (RN);
float ret;
FP_INIT_ROUNDMODE;
FP_UNPACK_Q (X, x);
FP_UNPACK_Q (Y, y);
FP_UNPACK_Q (Z, z);
FP_FMA_Q (R, X, Y, Z);
#if _FP_W_TYPE_SIZE < 64
FP_TRUNC_COOKED (S, Q, 1, 4, RN, R);
#else
FP_TRUNC_COOKED (S, Q, 1, 2, RN, R);
#endif
FP_PACK_S (ret, RN);
FP_HANDLE_EXCEPTIONS;
CHECK_NARROW_FMA (ret, x, y, z);
return ret;
}
DIAG_POP_NEEDS_COMMENT;
libm_alias_float_ldouble (fma)
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