projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f9f70e68 | 1 | /* Round to int floating-point values. PowerPC32 version. |
| d4697bc9 | 2 | Copyright (C) 2004-2014 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> |
| f9f70e68 | 24 | |
| b0e196a4 UD |
25 | .section .rodata.cst4,"aM",@progbits,4 |
| 26 | .align 2 | |
| f9f70e68 | 27 | .LC0: /* 2**52 */ |
| b0e196a4 | 28 | .long 0x59800000 |
| f9f70e68 UD |
29 | |
| 30 | .section ".text" | |
| 31 | ENTRY (__rint) | |
| 32 | #ifdef SHARED | |
| 33 | mflr r11 | |
| a7e91561 | 34 | cfi_register(lr,r11) |
| 91d2a845 WS |
35 | SETUP_GOT_ACCESS(r9,got_label) |
| 36 | addis r9,r9,.LC0-got_label@ha | |
| 37 | lfs fp13,.LC0-got_label@l(r9) | |
| a7e91561 UD |
38 | mtlr r11 |
| 39 | cfi_same_value (lr) | |
| f9f70e68 UD |
40 | #else |
| 41 | lis r9,.LC0@ha | |
| b0e196a4 | 42 | lfs fp13,.LC0@l(r9) |
| f9f70e68 UD |
43 | #endif |
| 44 | fabs fp0,fp1 | |
| 45 | fsub fp12,fp13,fp13 /* generate 0.0 */ | |
| 46 | fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO52) */ | |
| 47 | fcmpu cr6,fp1,fp12 /* if (x > 0.0) */ | |
| 60c414c3 AZ |
48 | bnllr cr7 |
| 49 | bng cr6,.L4 | |
| f9f70e68 UD |
50 | fadd fp1,fp1,fp13 /* x+= TWO52; */ |
| 51 | fsub fp1,fp1,fp13 /* x-= TWO52; */ | |
| 4d37c8aa UD |
52 | fabs fp1,fp1 /* if (x == 0.0) */ |
| 53 | blr /* x = 0.0; */ | |
| f9f70e68 | 54 | .L4: |
| 60c414c3 | 55 | bnllr cr6 /* if (x < 0.0) */ |
| 4d37c8aa UD |
56 | fsub fp1,fp1,fp13 /* x-= TWO52; */ |
| 57 | fadd fp1,fp1,fp13 /* x+= TWO52; */ | |
| 58 | fnabs fp1,fp1 /* if (x == 0.0) */ | |
| 59 | blr /* x = -0.0; */ | |
| f9f70e68 UD |
60 | END (__rint) |
| 61 | ||
| 62 | weak_alias (__rint, rint) | |
| 63 | ||
| 64 | #ifdef NO_LONG_DOUBLE | |
| 65 | weak_alias (__rint, rintl) | |
| 66 | strong_alias (__rint, __rintl) | |
| 67 | #endif | |
| f964490f RM |
68 | #if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0) |
| 69 | compat_symbol (libm, __rint, rintl, GLIBC_2_0) | |
| 70 | #endif |