68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
/* Copyright (C) 1998, 1999, 2000, 2004 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Alexandre Oliva <aoliva@redhat.com>
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based on the corresponding file in the mips port.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _FENV_H
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# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
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#endif
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/* Define bits representing the exception. We use the EF bit
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positions of the appropriate bits in the FPCR register. */
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enum
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{
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FE_INEXACT = 0x01,
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#define FE_INEXACT FE_INEXACT
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FE_UNDERFLOW = 0x02,
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#define FE_UNDERFLOW FE_UNDERFLOW
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FE_OVERFLOW = 0x04,
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#define FE_OVERFLOW FE_OVERFLOW
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FE_DIVBYZERO = 0x08,
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#define FE_DIVBYZERO FE_DIVBYZERO
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FE_INVALID = 0x10,
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#define FE_INVALID FE_INVALID
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};
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#define FE_ALL_EXCEPT \
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(FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
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/* The AM33/2.0 FPU supports only Round to nearest. Bits 3<<16 are
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reserved to represent other rounding modes. */
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enum
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{
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FE_TONEAREST = 0x00000,
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#define FE_TONEAREST FE_TONEAREST
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};
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/* Type representing exception flags. */
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typedef unsigned int fexcept_t;
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/* Type representing floating-point environment. */
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typedef unsigned int fenv_t;
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/* If the default argument is used we use this value. */
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#define FE_DFL_ENV ((__const fenv_t *) -1)
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#ifdef __USE_GNU
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/* Floating-point environment where none of the exception is masked. */
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# define FE_NOMASK_ENV ((__const fenv_t *) -2)
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#endif
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