diff options
Diffstat (limited to 'sysdeps/loongarch/fpu/fclrexcpt.c')
-rw-r--r-- | sysdeps/loongarch/fpu/fclrexcpt.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sysdeps/loongarch/fpu/fclrexcpt.c b/sysdeps/loongarch/fpu/fclrexcpt.c new file mode 100644 index 0000000000..e9f33a1658 --- /dev/null +++ b/sysdeps/loongarch/fpu/fclrexcpt.c @@ -0,0 +1,46 @@ +/* Clear given exceptions in current floating-point environment. + Copyright (C) 2022 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 + <https://www.gnu.org/licenses/>. */ + +#include <fenv.h> +#include <fenv_libc.h> +#include <fpu_control.h> + +int +feclearexcept (int excepts) +{ + int cw; + + /* Mask out unsupported bits/exceptions. */ + excepts &= FE_ALL_EXCEPT; + + /* Read the complete control word. */ + _FPU_GETCW (cw); + + /* Clear exception flag bits and cause bits. If the cause bit is not + cleared, the next CTC instruction (just below) will re-generate the + exception. */ + + cw &= ~(excepts | (excepts << CAUSE_SHIFT)); + + /* Put the new data in effect. */ + _FPU_SETCW (cw); + + /* Success. */ + return 0; +} +libm_hidden_def (feclearexcept) |