projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 5ce98c3f | 1 | /* float Floor function. PowerPC64 version. |
| f7a9f785 | 2 | Copyright (C) 2004-2016 Free Software Foundation, Inc. |
| 5ce98c3f UD |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 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. | |
| 9 | ||
| 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. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 5ce98c3f UD |
18 | |
| 19 | #include <sysdep.h> | |
| 20 | ||
| 21 | .section ".toc","aw" | |
| 76a66d51 | 22 | .p2align 3 |
| 5ce98c3f | 23 | .LC0: /* 2**23 */ |
| 76a66d51 AB |
24 | .long 0x4b000000 |
| 25 | .long 0x0 | |
| 5ce98c3f UD |
26 | .section ".text" |
| 27 | ||
| 4d37c8aa | 28 | EALIGN (__floorf, 4, 0) |
| d7d06f79 | 29 | CALL_MCOUNT 0 |
| 5ce98c3f | 30 | mffs fp11 /* Save current FPU rounding mode. */ |
| 4d37c8aa | 31 | lfs fp13,.LC0@toc(2) |
| 5ce98c3f UD |
32 | fabs fp0,fp1 |
| 33 | fsubs fp12,fp13,fp13 /* generate 0.0 */ | |
| 34 | fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO23) */ | |
| 35 | fcmpu cr6,fp1,fp12 /* if (x > 0.0) */ | |
| 36 | bnllr- cr7 | |
| 37 | mtfsfi 7,3 /* Set rounding mode toward -inf. */ | |
| 38 | ble- cr6,.L4 | |
| 39 | fadds fp1,fp1,fp13 /* x+= TWO23; */ | |
| 40 | fsubs fp1,fp1,fp13 /* x-= TWO23; */ | |
| 4d37c8aa UD |
41 | fabs fp1,fp1 /* if (x == 0.0) */ |
| 42 | /* x = 0.0; */ | |
| 5ce98c3f | 43 | mtfsf 0x01,fp11 /* restore previous rounding mode. */ |
| 5ce98c3f UD |
44 | blr |
| 45 | .L4: | |
| 46 | bge- cr6,.L9 /* if (x < 0.0) */ | |
| 47 | fsubs fp1,fp1,fp13 /* x-= TWO23; */ | |
| 48 | fadds fp1,fp1,fp13 /* x+= TWO23; */ | |
| 4d37c8aa UD |
49 | fnabs fp1,fp1 /* if (x == 0.0) */ |
| 50 | /* x = -0.0; */ | |
| 5ce98c3f | 51 | .L9: |
| 9c84384c | 52 | mtfsf 0x01,fp11 /* restore previous rounding mode. */ |
| 5ce98c3f UD |
53 | blr |
| 54 | END (__floorf) | |
| 55 | ||
| 56 | weak_alias (__floorf, floorf) | |
| 57 |