diff options
Diffstat (limited to 'libm/m68k/fesetround.c')
| -rw-r--r-- | libm/m68k/fesetround.c | 35 | 
1 files changed, 35 insertions, 0 deletions
| diff --git a/libm/m68k/fesetround.c b/libm/m68k/fesetround.c new file mode 100644 index 000000000..a8abc4e6e --- /dev/null +++ b/libm/m68k/fesetround.c @@ -0,0 +1,35 @@ +/* Set current rounding direction. +   Copyright (C) 1997-2025 Free Software Foundation, Inc. + +   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 +   <https://www.gnu.org/licenses/>.  */ + +#include <fenv.h> + +int +fesetround (int round) +{ +  fexcept_t fpcr; + +  if (round & ~FE_UPWARD) +    /* ROUND is no valid rounding mode.  */ +    return 1; + +  __asm__ ("fmove%.l %!,%0" : "=dm" (fpcr)); +  fpcr &= ~FE_UPWARD; +  fpcr |= round; +  __asm__ __volatile__ ("fmove%.l %0,%!" : : "dm" (fpcr)); + +  return 0; +} | 
