glibc/sysdeps/ieee754/ldbl-128/s_nextupl.c
Paul Eggert 2b778ceb40 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 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
2021-01-02 12:17:34 -08:00

59 lines
1.6 KiB
C

/* Return the least floating-point number greater than X.
Copyright (C) 2016-2021 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/>. */
#include <float.h>
#include <math.h>
#include <math_private.h>
#include <libm-alias-ldouble.h>
/* Return the least floating-point number greater than X. */
_Float128
__nextupl (_Float128 x)
{
int64_t hx, ix;
uint64_t lx;
GET_LDOUBLE_WORDS64 (hx, lx, x);
ix = hx & 0x7fffffffffffffffLL;
/* x is nan. */
if (((ix >= 0x7fff000000000000LL)
&& ((ix - 0x7fff000000000000LL) | lx) != 0))
return x + x;
if ((ix | lx) == 0)
return LDBL_TRUE_MIN;
if (hx >= 0)
{ /* x > 0. */
if (isinf (x))
return x;
lx++;
if (lx == 0)
hx++;
}
else
{ /* x < 0. */
if (lx == 0)
hx--;
lx--;
}
SET_LDOUBLE_WORDS64 (x, hx, lx);
return x;
}
libm_alias_ldouble (__nextup, nextup)