| /* Raise given exceptions. |
| Copyright (C) 1997-2018 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> |
| |
| #undef feraiseexcept |
| int |
| __feraiseexcept (int excepts) |
| { |
| fenv_union_t u; |
| |
| /* Raise exceptions represented by EXCEPTS. It is the responsibility of |
| the OS to ensure that if multiple exceptions occur they are fed back |
| to this process in the proper way; this can happen in hardware, |
| anyway (in particular, inexact with overflow or underflow). */ |
| |
| /* Get the current state. */ |
| u.fenv = fegetenv_register (); |
| |
| /* Add the exceptions */ |
| u.l = (u.l |
| | (excepts & FPSCR_STICKY_BITS) |
| /* Turn FE_INVALID into FE_INVALID_SOFTWARE. */ |
| | (excepts >> ((31 - FPSCR_VX) - (31 - FPSCR_VXSOFT)) |
| & FE_INVALID_SOFTWARE)); |
| |
| /* Store the new status word (along with the rest of the environment), |
| triggering any appropriate exceptions. */ |
| fesetenv_register (u.fenv); |
| |
| if ((excepts & FE_INVALID)) |
| { |
| /* For some reason, some PowerPC chips (the 601, in particular) |
| don't have FE_INVALID_SOFTWARE implemented. Detect this |
| case and raise FE_INVALID_SNAN instead. */ |
| u.fenv = fegetenv_register (); |
| if ((u.l & FE_INVALID) == 0) |
| set_fpscr_bit (FPSCR_VXSNAN); |
| } |
| |
| /* Success. */ |
| return 0; |
| } |
| |
| #include <shlib-compat.h> |
| #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2) |
| strong_alias (__feraiseexcept, __old_feraiseexcept) |
| compat_symbol (libm, __old_feraiseexcept, feraiseexcept, GLIBC_2_1); |
| #endif |
| |
| libm_hidden_def (__feraiseexcept) |
| libm_hidden_ver (__feraiseexcept, feraiseexcept) |
| versioned_symbol (libm, __feraiseexcept, feraiseexcept, GLIBC_2_2); |