projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 554066b8 | 1 | /* long double square root in software floating-point emulation. |
| f7a9f785 | 2 | Copyright (C) 1997-2016 Free Software Foundation, Inc. |
| 554066b8 MS |
3 | This file is part of the GNU C Library. |
| 4 | Contributed by Richard Henderson (rth@cygnus.com) and | |
| 5 | Jakub Jelinek (jj@ultra.linux.cz). | |
| 6 | ||
| 7 | The GNU C Library is free software; you can redistribute it and/or | |
| 8 | modify it under the terms of the GNU Lesser General Public | |
| 9 | License as published by the Free Software Foundation; either | |
| 10 | version 2.1 of the License, or (at your option) any later version. | |
| 11 | ||
| 12 | The GNU C Library is distributed in the hope that it will be useful, | |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | Lesser General Public License for more details. | |
| 16 | ||
| 17 | You should have received a copy of the GNU Lesser General Public | |
| 18 | License along with the GNU C Library; if not, see | |
| 19 | <http://www.gnu.org/licenses/>. */ | |
| 20 | ||
| 21 | #include <stdlib.h> | |
| 22 | #include <soft-fp.h> | |
| 23 | #include <quad.h> | |
| 24 | ||
| 25 | long double | |
| 26 | __ieee754_sqrtl (const long double a) | |
| 27 | { | |
| 28 | FP_DECL_EX; | |
| 29 | FP_DECL_Q(A); FP_DECL_Q(C); | |
| 30 | long double c; | |
| 31 | ||
| 32 | FP_INIT_ROUNDMODE; | |
| 33 | FP_UNPACK_Q(A, a); | |
| 34 | FP_SQRT_Q(C, A); | |
| 35 | FP_PACK_Q(c, C); | |
| 36 | FP_HANDLE_EXCEPTIONS; | |
| 37 | return c; | |
| 38 | } | |
| 39 | strong_alias (__ieee754_sqrtl, __sqrtl_finite) |