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#ifndef FLOAT_EMUL_H |
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#define FLOAT_EMUL_H |
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|
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/* |
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* Copyright (C) 2005 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* $Id: float_emul.h,v 1.2 2005/11/23 02:17:43 debug Exp $ |
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* |
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* Floating point emulation. See src/float_emul.c for the details. |
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*/ |
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|
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#include <math.h> |
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|
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#include "misc.h" |
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|
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struct ieee_float_value { |
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double f; |
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int nan; |
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}; |
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|
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#define IEEE_FMT_S 1 /* single, 32-bit float */ |
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#define IEEE_FMT_D 2 /* double, 64-bit float */ |
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#define IEEE_FMT_W 3 /* word, 32-bit integer */ |
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#define IEEE_FMT_L 4 /* long, 64-bit integer */ |
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|
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void ieee_interpret_float_value(uint64_t x, struct ieee_float_value *fvp, |
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int fmt); |
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uint64_t ieee_store_float_value(double nf, int fmt, int nan); |
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|
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#endif /* FLOAT_EMUL_H */ |