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Diffstat (limited to 'libm/metag/feholdexcpt.c')
-rw-r--r-- | libm/metag/feholdexcpt.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/libm/metag/feholdexcpt.c b/libm/metag/feholdexcpt.c new file mode 100644 index 000000000..98ef4d097 --- /dev/null +++ b/libm/metag/feholdexcpt.c @@ -0,0 +1,41 @@ +/* Store current floating-point environment and clear exceptions. + Copyright (C) 2013 Imagination Technologies Ltd. + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <fenv.h> +#include <unistd.h> + +#include "internal.h" + +int +feholdexcept (fenv_t *envp) +{ + unsigned int txdefr; + unsigned int txmode; + + __asm__ ("MOV %0,TXDEFR" : "=r" (txdefr)); + __asm__ ("MOV %0,TXMODE" : "=r" (txmode)); + + envp->txdefr = txdefr; + envp->txmode = txmode; + + metag_set_fpu_flags(0); + + return 0; +} |