1 /* Round float to int floating-point values without generating
2 an inexact exception, sparc32 v9 version.
4 Copyright (C) 2013-2014 Free Software Foundation, Inc.
5 This file is part of the GNU C Library.
6 Contributed by David S. Miller <davem@davemloft.net>, 2013.
8 The GNU C Library is free software; you can redistribute it and/or
9 modify it under the terms of the GNU Lesser General Public
10 License as published by the Free Software Foundation; either
11 version 2.1 of the License, or (at your option) any later version.
13 The GNU C Library is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public
19 License along with the GNU C Library; if not, see
20 <http://www.gnu.org/licenses/>. */
23 #include <math_ldbl_opt.h>
25 /* We pop constants into the FPU registers using the incoming
26 argument stack slots, since this avoid having to use any PIC
27 references. We also thus avoid having to allocate a register
30 VIS instructions are used to facilitate the formation of
31 easier constants, and the propagation of the sign bit. */
33 #define TWO_FIFTYTWO 0x43300000 /* 2**52 */
35 #define ZERO %f10 /* 0.0 */
36 #define SIGN_BIT %f12 /* -0.0 */
40 sethi %hi(TWO_FIFTYTWO), %o2
41 sethi %hi(0xf8003e0), %o5
44 or %o5, %lo(0xf8003e0), %o5
57 fcmpd %fcc3, %f14, %f16
58 fmovduge %fcc3, ZERO, %f16
59 fand %f0, SIGN_BIT, SIGN_BIT
60 for %f16, SIGN_BIT, %f16
64 for %f0, SIGN_BIT, %f0
68 weak_alias (__nearbyint, nearbyint)
70 #if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
71 compat_symbol (libm, __nearbyint, nearbyintl, GLIBC_2_1)