54 lines
1.9 KiB
C
Vendored
54 lines
1.9 KiB
C
Vendored
/*
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Copyright (c) 2023, David Anderson All rights reserved.
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Redistribution and use in source and binary forms, with
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or without modification, are permitted provided that the
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following conditions are met:
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Redistributions of source code must retain the above
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copyright notice, this list of conditions and the following
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disclaimer.
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Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following
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disclaimer in the documentation and/or other materials
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provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* Thanks to David Grayson/
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codereview.stackexchange.com/questions/98791/
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safe-multiplication-of-two-64-bit-signed-integers
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*/
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int _dwarf_int64_mult(Dwarf_Signed x, Dwarf_Signed y,
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Dwarf_Signed * result,
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Dwarf_Debug dbg, Dwarf_Error*error);
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int _dwarf_uint64_mult(Dwarf_Unsigned x, Dwarf_Unsigned y,
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Dwarf_Unsigned * result,
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Dwarf_Debug dbg, Dwarf_Error *error);
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#if 0
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/* See:
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https://stackoverflow.com/questions/3944505/detecting-signed-overflow-in-c-c
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*/
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int _dwarf_signed_add_check(Dwarf_Signed l, Dwarf_Signed r,
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Dwarf_Signed *sum, Dwarf_Debug dbg,
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Dwarf_Error *error);
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#endif /* 0 */
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