| /* Set floating-point environment exception handling. |
| Copyright (C) 1997-2014 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <fenv_libc.h> |
| |
| int |
| __fesetexceptflag (const fexcept_t *flagp, int excepts) |
| { |
| fenv_union_t u; |
| fexcept_t flag; |
| |
| /* Get the current state. */ |
| u.fenv = fegetenv_register (); |
| |
| /* Ignore exceptions not listed in 'excepts'. */ |
| flag = *flagp & excepts; |
| |
| /* Replace the exception status */ |
| u.l = ((u.l & ~(FPSCR_STICKY_BITS & excepts)) |
| | (flag & FPSCR_STICKY_BITS) |
| | (flag >> ((31 - FPSCR_VX) - (31 - FPSCR_VXSOFT)) |
| & FE_INVALID_SOFTWARE)); |
| |
| /* Store the new status word (along with the rest of the environment). |
| This may cause floating-point exceptions if the restored state |
| requests it. */ |
| fesetenv_register (u.fenv); |
| |
| /* Deal with FE_INVALID_SOFTWARE not being implemented on some chips. */ |
| if (flag & FE_INVALID) |
| feraiseexcept(FE_INVALID); |
| |
| /* Success. */ |
| return 0; |
| } |
| |
| #include <shlib-compat.h> |
| #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2) |
| strong_alias (__fesetexceptflag, __old_fesetexceptflag) |
| compat_symbol (libm, __old_fesetexceptflag, fesetexceptflag, GLIBC_2_1); |
| #endif |
| |
| versioned_symbol (libm, __fesetexceptflag, fesetexceptflag, GLIBC_2_2); |
