From 3a5ade59c9e89b85cba4502578850847adb58e0e Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Thu, 21 May 1998 15:39:52 +0000 Subject: [PATCH] Definitions for FPU handling header. --- sysdeps/arm/fpu/bits/fenv.h | 58 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 sysdeps/arm/fpu/bits/fenv.h diff --git a/sysdeps/arm/fpu/bits/fenv.h b/sysdeps/arm/fpu/bits/fenv.h new file mode 100644 index 0000000..17b9702 --- /dev/null +++ b/sysdeps/arm/fpu/bits/fenv.h @@ -0,0 +1,58 @@ +/* Copyright (C) 1997, 1998 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. 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 directly; include 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_EXCEPTION_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 fexcept_t; + +/* Type representing floating-point environment. */ +typedef struct + { + unsigned long cw; + } +fenv_t; + +/* If the default argument is used we use this value. */ +#define FE_DFL_ENV ((fenv_t *) -1l) -- 2.7.4