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/* lrint(), sparc64 vis3 version.
Copyright (C) 2012-2025 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 <sysdep.h>
/* VIS instructions are used to facilitate the formation of
easier constants, and the propagation of the sign bit. */
#define TWO_FIFTYTWO 0x43300000 /* 2**52 */
#define ZERO %f10 /* 0.0 */
#define SIGN_BIT %f12 /* -0.0 */
ENTRY (__lrint_vis3)
sethi %hi(TWO_FIFTYTWO), %o2
sllx %o2, 32, %o2
fzero ZERO
fnegd ZERO, SIGN_BIT
movxtod %o2, %f16
fabsd %f0, %f14
fcmpd %fcc3, %f14, %f16
fmovduge %fcc3, ZERO, %f16
fand %f0, SIGN_BIT, SIGN_BIT
for %f16, SIGN_BIT, %f16
faddd %f0, %f16, %f6
fsubd %f6, %f16, %f0
fabsd %f0, %f0
for %f0, SIGN_BIT, %f0
fdtox %f0, %f4
retl
movdtox %f4, %o0
END (__lrint_vis3)
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