1 /* finite(). PowerPC64/POWER7 version.
2 Copyright (C) 2010 Free Software Foundation, Inc.
3 Contributed by Luis Machado <luisgpm@br.ibm.com>.
4 This file is part of the GNU C Library.
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/>. */
21 #include <math_ldbl_opt.h>
26 .tc FD_ONE[TC],0x3ff0000000000000
28 .type __finite, @function
30 EALIGN (__finite, 4, 0)
37 /* If we are here, we either have +/-INF,
40 stfd fp1,-16(r1) /* Transfer FP to GPR's. */
41 ori 2,2,0 /* Force a new dispatch group. */
43 lhz r4,-16(r1) /* Fetch the upper portion of the high word of
44 the FP value (where the exponent and sign bits
46 clrlwi r4,r4,17 /* r4 = abs(r4). */
47 cmpwi cr7,r4,0x7ff0 /* r4 == 0x7ff0? */
48 bltlr cr7 /* LT means finite, other non-finite. */
54 weak_alias (__finite, finite)
56 /* It turns out that the 'double' version will also always work for
58 strong_alias (__finite, __finitef)
59 hidden_def (__finitef)
60 weak_alias (__finitef, finitef)
63 # if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
64 compat_symbol (libc, __finite, __finitel, GLIBC_2_0);
65 compat_symbol (libc, finite, finitel, GLIBC_2_0);