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doc/developer: Add terse documentation of assumed C implementation defined behavior

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Suggested-by: "Ronald S. Bultje" <rsbultje@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit b706ddbae3f4a11c58560b914807931556108b55)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer 2017-04-28 02:50:42 +02:00
parent b3328c069c
commit 345ae4e8df
1 changed files with 5 additions and 0 deletions
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doc/developer.texi
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@ -131,6 +131,11 @@ designated struct initializers (@samp{struct s x = @{ .i = 17 @};});
@item
compound literals (@samp{x = (struct s) @{ 17, 23 @};}).
@item
Implementation defined behavior for signed integers is assumed to match the
expected behavior for two's complement. Non representable values in integer
casts are binary truncated. Shift right of signed values uses sign extension.
@end itemize
These features are supported by all compilers we care about, so we will not