| /* Implement modf for m68k. |
| Copyright (C) 1996-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <math.h> |
| #include "mathimpl.h" |
| |
| FLOAT |
| M_DECL_FUNC (__modf) (FLOAT x, FLOAT *iptr) |
| { |
| FLOAT x_int, result; |
| unsigned long x_cond; |
| |
| __asm ("fintrz%.x %1, %0" : "=f" (x_int) : "f" (x)); |
| *iptr = x_int; |
| x_cond = __m81_test (x); |
| if (x_cond & __M81_COND_INF) |
| { |
| result = 0; |
| if (x_cond & __M81_COND_NEG) |
| result = -result; |
| } |
| else if (x_cond & __M81_COND_ZERO) |
| result = x; |
| else |
| result = x - x_int; |
| return result; |
| } |
| declare_mgen_alias (__modf, modf) |
