glibc/sysdeps/ieee754/float128/math-nan-payload-float128.h
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

35 lines
1.3 KiB
C

/* NaN payload handling for _Float128.
Copyright (C) 2017-2022 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 <ieee754_float128.h>
#define SET_NAN_PAYLOAD(flt, mant) \
do \
{ \
union ieee854_float128 u; \
u.d = (flt); \
u.ieee_nan.mantissa0 = 0; \
u.ieee_nan.mantissa1 = 0; \
u.ieee_nan.mantissa2 = (mant) >> 32; \
u.ieee_nan.mantissa3 = (mant); \
if ((u.ieee.mantissa0 | u.ieee.mantissa1 \
| u.ieee.mantissa2 | u.ieee.mantissa3) != 0) \
(flt) = u.d; \
} \
while (0)