mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-02 01:40:07 +00:00
581c785bf3
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
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/* Round argument to nearest integral value according to current rounding
|
|
direction.
|
|
Copyright (C) 1997-2022 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 <fenv.h>
|
|
#include <limits.h>
|
|
#include <math.h>
|
|
|
|
#include <math-narrow-eval.h>
|
|
#include <math_private.h>
|
|
#include <libm-alias-float.h>
|
|
#include <fix-fp-int-convert-overflow.h>
|
|
|
|
static const float two23[2] =
|
|
{
|
|
8.3886080000e+06, /* 0x4B000000 */
|
|
-8.3886080000e+06, /* 0xCB000000 */
|
|
};
|
|
|
|
|
|
long int
|
|
__lrintf (float x)
|
|
{
|
|
int32_t j0;
|
|
uint32_t i0;
|
|
float w;
|
|
float t;
|
|
long int result;
|
|
int sx;
|
|
|
|
GET_FLOAT_WORD (i0, x);
|
|
|
|
sx = i0 >> 31;
|
|
j0 = ((i0 >> 23) & 0xff) - 0x7f;
|
|
i0 &= 0x7fffff;
|
|
i0 |= 0x800000;
|
|
|
|
if (j0 < (int32_t) (sizeof (long int) * 8) - 1)
|
|
{
|
|
if (j0 >= 23)
|
|
result = (long int) i0 << (j0 - 23);
|
|
else
|
|
{
|
|
w = math_narrow_eval (two23[sx] + x);
|
|
t = w - two23[sx];
|
|
GET_FLOAT_WORD (i0, t);
|
|
j0 = ((i0 >> 23) & 0xff) - 0x7f;
|
|
i0 &= 0x7fffff;
|
|
i0 |= 0x800000;
|
|
|
|
result = (j0 < 0 ? 0 : i0 >> (23 - j0));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
#ifdef FE_INVALID
|
|
/* The number is too large. Unless it rounds to LONG_MIN,
|
|
FE_INVALID must be raised and the return value is
|
|
unspecified. */
|
|
if (FIX_FLT_LONG_CONVERT_OVERFLOW && x != (float) LONG_MIN)
|
|
{
|
|
feraiseexcept (FE_INVALID);
|
|
return sx == 0 ? LONG_MAX : LONG_MIN;
|
|
}
|
|
#endif
|
|
return (long int) x;
|
|
}
|
|
|
|
return sx ? -result : result;
|
|
}
|
|
|
|
libm_alias_float (__lrint, lrint)
|