projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f9f70e68 | 1 | /* Round to int floating-point values. PowerPC32 version. |
| 04277e02 | 2 | Copyright (C) 2004-2019 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 | /* This has been coded in assembler because GCC makes such a mess of it | |
| 20 | when it's coded in C. */ | |
| 21 | ||
| 22 | #include <sysdep.h> | |
| f964490f | 23 | #include <math_ldbl_opt.h> |
| 51ea3b20 | 24 | #include <libm-alias-double.h> |
| f9f70e68 | 25 | |
| b0e196a4 UD |
26 | .section .rodata.cst4,"aM",@progbits,4 |
| 27 | .align 2 | |
| f9f70e68 | 28 | .LC0: /* 2**52 */ |
| b0e196a4 | 29 | .long 0x59800000 |
| f9f70e68 UD |
30 | |
| 31 | .section ".text" | |
| 32 | ENTRY (__rint) | |
| 33 | #ifdef SHARED | |
| 34 | mflr r11 | |
| a7e91561 | 35 | cfi_register(lr,r11) |
| 91d2a845 WS |
36 | SETUP_GOT_ACCESS(r9,got_label) |
| 37 | addis r9,r9,.LC0-got_label@ha | |
| 38 | lfs fp13,.LC0-got_label@l(r9) | |
| a7e91561 UD |
39 | mtlr r11 |
| 40 | cfi_same_value (lr) | |
| f9f70e68 UD |
41 | #else |
| 42 | lis r9,.LC0@ha | |
| b0e196a4 | 43 | lfs fp13,.LC0@l(r9) |
| f9f70e68 UD |
44 | #endif |
| 45 | fabs fp0,fp1 | |
| 46 | fsub fp12,fp13,fp13 /* generate 0.0 */ | |
| 47 | fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO52) */ | |
| 48 | fcmpu cr6,fp1,fp12 /* if (x > 0.0) */ | |
| debf7618 | 49 | bnl cr7,.L10 |
| 60c414c3 | 50 | bng cr6,.L4 |
| f9f70e68 UD |
51 | fadd fp1,fp1,fp13 /* x+= TWO52; */ |
| 52 | fsub fp1,fp1,fp13 /* x-= TWO52; */ | |
| 4d37c8aa UD |
53 | fabs fp1,fp1 /* if (x == 0.0) */ |
| 54 | blr /* x = 0.0; */ | |
| f9f70e68 | 55 | .L4: |
| 60c414c3 | 56 | bnllr cr6 /* if (x < 0.0) */ |
| 4d37c8aa UD |
57 | fsub fp1,fp1,fp13 /* x-= TWO52; */ |
| 58 | fadd fp1,fp1,fp13 /* x+= TWO52; */ | |
| 59 | fnabs fp1,fp1 /* if (x == 0.0) */ | |
| 60 | blr /* x = -0.0; */ | |
| debf7618 JM |
61 | .L10: |
| 62 | /* Ensure sNaN input is converted to qNaN. */ | |
| 63 | fcmpu cr7,fp1,fp1 | |
| 64 | beqlr cr7 | |
| 65 | fadd fp1,fp1,fp1 | |
| 66 | blr | |
| f9f70e68 UD |
67 | END (__rint) |
| 68 | ||
| 51ea3b20 | 69 | libm_alias_double (__rint, rint) |