diff options
Diffstat (limited to 'sysdeps/m68k/fpu/s_remquo.c')
-rw-r--r-- | sysdeps/m68k/fpu/s_remquo.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/sysdeps/m68k/fpu/s_remquo.c b/sysdeps/m68k/fpu/s_remquo.c new file mode 100644 index 0000000000..3682ba7896 --- /dev/null +++ b/sysdeps/m68k/fpu/s_remquo.c @@ -0,0 +1,58 @@ +/* Compute remainder and a congruent to the quotient. m68k fpu version + Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#define __LIBC_M81_MATH_INLINES +#include <math.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) + +float_type +s(__remquo) (float_type x, float_type y, int *quo) +{ + float_type result; + int cquo, fpsr; + + /* FIXME: Which of frem and fmod is correct? */ +#if 1 + __asm ("frem%.x %2,%0\n\tfmove%.l %/fpsr,%1" + : "=f" (result), "=dm" (fpsr) : "f" (y), "0" (x)); + cquo = (fpsr >> 16) & 0x7f; + if ((result > 0) != (x > 0)) + cquo--; +#else + __asm ("fmod%.x %2,%0\n\tfmove%.l %/fpsr,%1" + : "=f" (result), "=dm" (fpsr) : "f" (y), "0" (x)); + cquo = (fpsr >> 16) & 0x7f; +#endif + if (fpsr & (1 << 23)) + cquo = -cquo; + *quo = cquo; + return result; +} +#define weak_aliasx(a,b) weak_alias(a,b) +weak_aliasx (s(__remquo), s(remquo)) |