1 /* Round to int floating-point values. PowerPC64 version.
2 Copyright (C) 2011-2014 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Adhemerval Zanella <azanella@br.ibm.com>, 2011
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 <http://www.gnu.org/licenses/>. */
20 /* This has been coded in assembler because GCC makes such a mess of it
21 when it's coded in C. */
26 /* float [fp1] nearbyintf(float [fp1]) */
35 EALIGN (__nearbyintf, 4, 0)
39 fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO52) */
41 fsubs fp12,fp13,fp13 /* generate 0.0 */
42 fcmpu cr7,fp1,fp12 /* if (x > 0.0) */
43 ble cr7, L(lessthanzero)
44 mtfsb0 4*cr7+lt /* Disable FE_INEXACT exception */
45 fadds fp1,fp1,fp13 /* x += TWO23 */
46 fsubs fp1,fp1,fp13 /* x -= TWO23 */
47 fabs fp1,fp1 /* if (x == 0.0) */
48 mtfsb0 4*cr1+eq /* Clear pending FE_INEXACT exception */
51 bgelr cr7 /* if (x < 0.0) */
52 mtfsb0 4*cr7+lt /* Disable FE_INEXACT exception */
53 fsubs fp1,fp1,fp13 /* x -= TWO23 */
54 fadds fp1,fp1,fp13 /* x += TWO23 */
55 fnabs fp1,fp1 /* if (x == 0.0) */
56 mtfsb0 4*cr1+eq /* Clear pending FE_INEXACT exception */
60 weak_alias (__nearbyintf, nearbyintf)