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Diffstat (limited to 'libm/metag/feupdateenv.c')
-rw-r--r-- | libm/metag/feupdateenv.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/libm/metag/feupdateenv.c b/libm/metag/feupdateenv.c new file mode 100644 index 000000000..f2fc69f54 --- /dev/null +++ b/libm/metag/feupdateenv.c @@ -0,0 +1,45 @@ +/* Install given floating-point environment and raise exceptions. + Copyright (C) 2013 Imagination Technologies Ltd. + 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> + +libm_hidden_proto(fesetenv) +libm_hidden_proto(feraiseexcept) + +int +feupdateenv (const fenv_t *envp) +{ + unsigned int temp; + + /* Save current exceptions. */ + __asm__ ("MOV %0,TXDEFR" : "=r" (temp)); + + temp >>= 16; + temp &= FE_ALL_EXCEPT; + + /* Install new environment. */ + fesetenv (envp); + + /* Raise the saved exception. */ + feraiseexcept ((int) temp); + + /* Success. */ + return 0; +} |