/* Copyright (C) 1997, 1998, 1999 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. */ #ifndef _FENV_H # error "Never use <bits/fenv.h> directly; include <fenv.h> instead." #endif /* Define bits representing exceptions in the FPU status word. */ enum { FE_INVALID = 1, #define FE_INVALID FE_INVALID FE_DIVBYZERO = 2, #define FE_DIVBYZERO FE_DIVBYZERO FE_OVERFLOW = 4, #define FE_OVERFLOW FE_OVERFLOW FE_UNDERFLOW = 8, #define FE_UNDERFLOW FE_UNDERFLOW }; /* Amount to shift by to convert an exception to a mask bit. */ #define FE_EXCEPT_SHIFT 16 /* All supported exceptions. */ #define FE_ALL_EXCEPT \ (FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW) /* The ARM FPU basically only supports round-to-nearest. Other rounding modes exist, but you have to encode them in the actual instruction. */ #define FE_TONEAREST 0 /* Type representing exception flags. */ typedef unsigned long int fexcept_t; /* Type representing floating-point environment. */ typedef struct { unsigned long int __cw; } fenv_t; /* If the default argument is used we use this value. */ #define FE_DFL_ENV ((fenv_t *) -1l)