projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| e53df1de | 1 | /* Implement modf for m68k. |
| 688903eb | 2 | Copyright (C) 1996-2018 Free Software Foundation, Inc. |
| e53df1de JM |
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 | |
| 16 | License along with the GNU C Library. If not, see | |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 18 | ||
| 19 | #include <math.h> | |
| 20 | #include "mathimpl.h" | |
| 21 | ||
| 22 | FLOAT | |
| 23 | M_DECL_FUNC (__modf) (FLOAT x, FLOAT *iptr) | |
| 24 | { | |
| 25 | FLOAT x_int, result; | |
| 26 | unsigned long x_cond; | |
| 27 | ||
| 28 | __asm ("fintrz%.x %1, %0" : "=f" (x_int) : "f" (x)); | |
| 29 | *iptr = x_int; | |
| 30 | x_cond = __m81_test (x); | |
| 31 | if (x_cond & __M81_COND_INF) | |
| 32 | { | |
| 33 | result = 0; | |
| 34 | if (x_cond & __M81_COND_NEG) | |
| 35 | result = -result; | |
| 36 | } | |
| 37 | else if (x_cond & __M81_COND_ZERO) | |
| 38 | result = x; | |
| 39 | else | |
| 40 | result = x - x_int; | |
| 41 | return result; | |
| 42 | } | |
| 43 | declare_mgen_alias (__modf, modf) |