diff options
Diffstat (limited to 'sysdeps/m68k/m680x0/fpu/s_modf.c')
| -rw-r--r-- | sysdeps/m68k/m680x0/fpu/s_modf.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/sysdeps/m68k/m680x0/fpu/s_modf.c b/sysdeps/m68k/m680x0/fpu/s_modf.c new file mode 100644 index 0000000000..c9360c0ec4 --- /dev/null +++ b/sysdeps/m68k/m680x0/fpu/s_modf.c @@ -0,0 +1,53 @@ +/* Copyright (C) 1996-2014 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" + +#ifndef SUFF +#define SUFF +#endif +#ifndef float_type +#define float_type double +#endif + +#define CONCATX(a,b) __CONCAT(a,b) +#define s(name) CONCATX(name,SUFF) +#define m81(func) __m81_u(s(func)) + +float_type +s(__modf) (float_type x, float_type *iptr) +{ + float_type 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; +} +weak_alias (s(__modf), s(modf)) |