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These encoded values should all decode to zero
Positive Numbers
0x01003456 (1 byte 0x00)
0x02000056 (2 bytes 0x0000)
0x03000000 (3 bytes 0x000000)
0x04000000 (4 bytes 0x000000_00)
Negative Numbers
0x00923456 -(0 bytes, so zero)
0x01803456 -(1 byte 0x00)
0x02800056 -(2 bytes 0x0000)
0x03800000 -(3 bytes 0x000000)
0x04800000 -(4 bytes 0x000000_00)
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Use misc methods of avoiding unnecesary header includes.
Replace int typedefs with int##_t from stdint.h.
Replace PRI64[xdu] with PRI[xdu]64 from inttypes.h.
Normalize QT_VERSION ifs where possible.
Resolve some indirect dependencies as direct ones.
Remove extern declarations from .cpp files.
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class template base_uint had its own private lookup table.
This is saving 256 bytes per instantiation.
The result is not spectacular as bitcoin-qt has only shrinked of
about 1Kb but it is still valid improvement.
Also, I have replaced a for loop with a memset() call.
Made CBigNum::SetHex() use the new HexDigit() function.
Signed-off-by: Olivier Langlois <olivier@olivierlanglois.net>
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One of the test cases currently aborts when using gcc's flag -ftrapv, due to
negating an INT64_MIN int64 variable, which is an undefined operation.
This will be fixed in a subsequent commit.
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