glibc/sysdeps/ieee754/soft-fp/s_faddl.c
Paul Eggert 581c785bf3 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 11:40:24 -08:00

56 lines
1.5 KiB
C

/* Add long double (ldbl-128) values, narrowing the result to float,
using soft-fp.
Copyright (C) 2018-2022 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/>. */
#define f32addf64x __hide_f32addf64x
#define f32addf128 __hide_f32addf128
#include <math.h>
#undef f32addf64x
#undef f32addf128
#include <math-narrow.h>
#include <soft-fp.h>
#include <single.h>
#include <quad.h>
float
__faddl (_Float128 x, _Float128 y)
{
FP_DECL_EX;
FP_DECL_Q (X);
FP_DECL_Q (Y);
FP_DECL_Q (R);
FP_DECL_S (RN);
float ret;
FP_INIT_ROUNDMODE;
FP_UNPACK_SEMIRAW_Q (X, x);
FP_UNPACK_SEMIRAW_Q (Y, y);
FP_ADD_Q (R, X, Y);
#if _FP_W_TYPE_SIZE < 64
FP_TRUNC (S, Q, 1, 4, RN, R);
#else
FP_TRUNC (S, Q, 1, 2, RN, R);
#endif
FP_PACK_SEMIRAW_S (ret, RN);
FP_HANDLE_EXCEPTIONS;
CHECK_NARROW_ADD (ret, x, y);
return ret;
}
libm_alias_float_ldouble (add)