projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f9f70e68 | 1 | /* float ceil function. PowerPC32 version. |
| 688903eb | 2 | Copyright (C) 2004-2018 Free Software Foundation, Inc. |
| f9f70e68 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/>. */ | |
| f9f70e68 UD |
18 | |
| 19 | #include <sysdep.h> | |
| 216933b2 | 20 | #include <libm-alias-float.h> |
| f9f70e68 | 21 | |
| 4d37c8aa | 22 | .section .rodata.cst4,"aM",@progbits,4 |
| 99c7f870 | 23 | .align 2 |
| f9f70e68 | 24 | .LC0: /* 2**23 */ |
| 4d37c8aa | 25 | .long 0x4b000000 |
| f9f70e68 UD |
26 | |
| 27 | .section ".text" | |
| 28 | ENTRY (__ceilf) | |
| f9f70e68 UD |
29 | #ifdef SHARED |
| 30 | mflr r11 | |
| a7e91561 | 31 | cfi_register(lr,r11) |
| 91d2a845 WS |
32 | SETUP_GOT_ACCESS(r9,got_label) |
| 33 | addis r9,r9,.LC0-got_label@ha | |
| 34 | lfs fp13,.LC0-got_label@l(r9) | |
| a7e91561 UD |
35 | mtlr r11 |
| 36 | cfi_same_value (lr) | |
| f9f70e68 UD |
37 | #else |
| 38 | lis r9,.LC0@ha | |
| 4d37c8aa | 39 | lfs fp13,.LC0@l(r9) |
| f9f70e68 UD |
40 | #endif |
| 41 | fabs fp0,fp1 | |
| 42 | fsubs fp12,fp13,fp13 /* generate 0.0 */ | |
| 43 | fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO23) */ | |
| 1f921a93 JM |
44 | mffs fp11 /* Save current FPU rounding mode and |
| 45 | "inexact" state. */ | |
| f9f70e68 | 46 | fcmpu cr6,fp1,fp12 /* if (x > 0.0) */ |
| debf7618 | 47 | bnl- cr7,.L10 |
| f9f70e68 UD |
48 | mtfsfi 7,2 /* Set rounding mode toward +inf. */ |
| 49 | ble- cr6,.L4 | |
| 50 | fadds fp1,fp1,fp13 /* x+= TWO23; */ | |
| 51 | fsubs fp1,fp1,fp13 /* x-= TWO23; */ | |
| 4d37c8aa UD |
52 | fabs fp1,fp1 /* if (x == 0.0) */ |
| 53 | /* x = 0.0; */ | |
| 1f921a93 JM |
54 | mtfsf 0xff,fp11 /* Restore previous rounding mode and |
| 55 | "inexact" state. */ | |
| f9f70e68 UD |
56 | blr |
| 57 | .L4: | |
| 58 | bge- cr6,.L9 /* if (x < 0.0) */ | |
| 59 | fsubs fp1,fp1,fp13 /* x-= TWO23; */ | |
| 60 | fadds fp1,fp1,fp13 /* x+= TWO23; */ | |
| 4d37c8aa UD |
61 | fnabs fp1,fp1 /* if (x == 0.0) */ |
| 62 | /* x = -0.0; */ | |
| 63 | .L9: | |
| 1f921a93 JM |
64 | mtfsf 0xff,fp11 /* Restore previous rounding mode and |
| 65 | "inexact" state. */ | |
| f9f70e68 | 66 | blr |
| debf7618 JM |
67 | .L10: |
| 68 | /* Ensure sNaN input is converted to qNaN. */ | |
| 69 | fcmpu cr7,fp1,fp1 | |
| 70 | beqlr cr7 | |
| 71 | fadds fp1,fp1,fp1 | |
| 72 | blr | |
| f9f70e68 UD |
73 | END (__ceilf) |
| 74 | ||
| 216933b2 | 75 | libm_alias_float (__ceil, ceil) |
| f9f70e68 | 76 |