1/* Copyright (C) 2021-2024 Free Software Foundation, Inc.
2
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#define NO_MATH_REDIRECT
20#include <math.h>
21#include <libm-alias-double.h>
22
23double
24__roundeven (double x)
25{
26 asm volatile ("frintn \t%d0, %d1" : "=w" (x) : "w" (x));
27 return x;
28}
29libm_alias_double (__roundeven, roundeven)
30

source code of glibc/sysdeps/aarch64/fpu/s_roundeven.c