mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 06:20:06 +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
42 lines
1.6 KiB
C
42 lines
1.6 KiB
C
/* Add _Float64 values, converting the result to _Float32x. i386 version.
|
|
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/>. */
|
|
|
|
#include <math.h>
|
|
#include <fpu_control.h>
|
|
#include <math-narrow-eval.h>
|
|
#include <math-narrow.h>
|
|
|
|
_Float32x
|
|
__f32xaddf64 (_Float64 x, _Float64 y)
|
|
{
|
|
/* To avoid double rounding, set double precision for the addition.
|
|
math_narrow_eval is still needed to eliminate excess range in the
|
|
case of overflow. If the result of the addition is in the
|
|
subnormal range for double, it is exact, so no issues of double
|
|
rounding for subnormals arise. */
|
|
fpu_control_t cw, cw_double;
|
|
_FPU_GETCW (cw);
|
|
cw_double = (cw & ~_FPU_EXTENDED) | _FPU_DOUBLE;
|
|
_FPU_SETCW (cw_double);
|
|
_Float32x ret = math_narrow_eval (x + y);
|
|
_FPU_SETCW (cw);
|
|
CHECK_NARROW_ADD (ret, x, y);
|
|
return ret;
|
|
}
|
|
libm_alias_float32x_float64 (add)
|