1 /* lrintf(), sparc32 v9 version.
2 Copyright (C) 2012-2020 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by David S. Miller <davem@davemloft.net>, 2012.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
21 #include <libm-alias-float.h>
23 /* We pop constants into the FPU registers using the incoming
24 argument stack slots, since this avoid having to use any PIC
25 references. We also thus avoid having to allocate a register
28 VIS instructions are used to facilitate the formation of
29 easier constants, and the propagation of the sign bit. */
31 #define TWO_TWENTYTHREE 0x4b000000 /* 2**23 */
33 #define ZERO %f10 /* 0.0 */
34 #define SIGN_BIT %f12 /* -0.0 */
38 sethi %hi(TWO_TWENTYTHREE), %o2
48 fcmps %fcc3, %f14, %f16
50 fmovsuge %fcc3, ZERO, %f16
51 fands %f1, SIGN_BIT, SIGN_BIT
53 fors %f16, SIGN_BIT, %f16
57 fors %f0, SIGN_BIT, %f0
63 libm_alias_float (__lrint, lrint)