projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 0f507b6c | 1 | /* finite(). PowerPC64/POWER7 version. |
| d4697bc9 | 2 | Copyright (C) 2010-2014 Free Software Foundation, Inc. |
| 0f507b6c LM |
3 | Contributed by Luis Machado <luisgpm@br.ibm.com>. |
| 4 | This file is part of the GNU C Library. | |
| 5 | ||
| 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. | |
| 10 | ||
| 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. | |
| 15 | ||
| 16 | You should have received a copy of the GNU Lesser General Public | |
| 59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
| 18 | <http://www.gnu.org/licenses/>. */ | |
| 0f507b6c LM |
19 | |
| 20 | #include <sysdep.h> | |
| 21 | #include <math_ldbl_opt.h> | |
| 22 | ||
| 23 | /* int __finite(x) */ | |
| 24 | .section ".toc","aw" | |
| 25 | .LC0: /* 1.0 */ | |
| 26 | .tc FD_ONE[TC],0x3ff0000000000000 | |
| 27 | .section ".text" | |
| 28 | .type __finite, @function | |
| 29 | .machine power7 | |
| 30 | EALIGN (__finite, 4, 0) | |
| 31 | CALL_MCOUNT 0 | |
| 32 | lfd fp0,.LC0@toc(r2) | |
| 33 | ftdiv cr7,fp1,fp0 | |
| 34 | li r3,1 | |
| 35 | bflr 30 | |
| 36 | ||
| 37 | /* If we are here, we either have +/-INF, | |
| 38 | NaN or denormal. */ | |
| 39 | ||
| 40 | stfd fp1,-16(r1) /* Transfer FP to GPR's. */ | |
| 41 | ori 2,2,0 /* Force a new dispatch group. */ | |
| 7b88401f AM |
42 | lhz r4,-16+HISHORT(r1) /* Fetch the upper 16 bits of the FP value |
| 43 | (biased exponent and sign bit). */ | |
| 0f507b6c LM |
44 | clrlwi r4,r4,17 /* r4 = abs(r4). */ |
| 45 | cmpwi cr7,r4,0x7ff0 /* r4 == 0x7ff0? */ | |
| 46 | bltlr cr7 /* LT means finite, other non-finite. */ | |
| 47 | li r3,0 | |
| 48 | blr | |
| 49 | END (__finite) | |
| 50 | ||
| 51 | hidden_def (__finite) | |
| 52 | weak_alias (__finite, finite) | |
| 53 | ||
| 54 | /* It turns out that the 'double' version will also always work for | |
| 55 | single-precision. */ | |
| 56 | strong_alias (__finite, __finitef) | |
| 57 | hidden_def (__finitef) | |
| 58 | weak_alias (__finitef, finitef) | |
| 59 | ||
| 45470df3 AZ |
60 | #ifdef IS_IN_libm |
| 61 | # if LONG_DOUBLE_COMPAT (libm, GLIBC_2_0) | |
| 62 | compat_symbol (libm, __finite, __finitel, GLIBC_2_0) | |
| 63 | compat_symbol (libm, finite, finitel, GLIBC_2_0) | |
| 64 | # endif | |
| 65 | #else | |
| 66 | # if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0) | |
| 0f507b6c LM |
67 | compat_symbol (libc, __finite, __finitel, GLIBC_2_0); |
| 68 | compat_symbol (libc, finite, finitel, GLIBC_2_0); | |
| 69 | # endif | |
| 70 | #endif |