1 /* isinf(). PowerPC64/POWER8 version.
2 Copyright (C) 2014-2015 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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 <http://www.gnu.org/licenses/>. */
20 #include <math_ldbl_opt.h>
22 #define MFVSRD_R3_V1 .long 0x7c230066 /* mfvsrd r3,vs1 */
24 /* int [r3] __isinf([fp1] x) */
26 EALIGN (__isinf, 4, 0)
29 lis r9,0x7ff0 /* r9 = 0x7ff0 */
30 rldicl r10,r3,0,1 /* r10 = r3 & (0x8000000000000000) */
31 sldi r9,r9,32 /* r9 = r9 << 52 */
32 cmpd cr7,r10,r9 /* fp1 & 0x7ff0000000000000 ? */
37 sradi r3,r3,63 /* r3 = r3 >> 63 */
38 ori r3,r3,1 /* r3 = r3 | 0x1 */
43 weak_alias (__isinf, isinf)
45 /* It turns out that the 'double' version will also always work for
47 strong_alias (__isinf, __isinff)
49 weak_alias (__isinff, isinff)
52 strong_alias (__isinf, __isinfl)
53 weak_alias (__isinf, isinfl)
57 # if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
58 compat_symbol (libc, __isinf, __isinfl, GLIBC_2_0);
59 compat_symbol (libc, isinf, isinfl, GLIBC_2_0);