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author | Arnie97 <arnie97@gmail.com> | 2015-04-11 13:09:50 +0800 |
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committer | Arnie97 <arnie97@gmail.com> | 2015-04-11 13:09:50 +0800 |
commit | c7f085ee34ebce89e523b10a56f9f6d5b1e4cd3a (patch) | |
tree | 7739ad481e099b59dd0393c61e898c51c35f9356 /c.html.markdown | |
parent | c38d8d93135561e8c0afbe20a5b16b39917ee06c (diff) | |
parent | f0540b93b16311ca39cf4f0ad5a9abf8dc13f223 (diff) |
Merge pull request #1 from adambard/master
Fetch updates from upstream
Diffstat (limited to 'c.html.markdown')
-rw-r--r-- | c.html.markdown | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/c.html.markdown b/c.html.markdown index 1696d28f..d3f20eda 100644 --- a/c.html.markdown +++ b/c.html.markdown @@ -234,7 +234,7 @@ int main() { // same with j-- and --j // Bitwise operators! - ~0x0F; // => 0xF0 (bitwise negation, "1's complement") + ~0x0F; // => 0xFFFFFFF0 (bitwise negation, "1's complement", example result for 32-bit int) 0x0F & 0xF0; // => 0x00 (bitwise AND) 0x0F | 0xF0; // => 0xFF (bitwise OR) 0x04 ^ 0x0F; // => 0x0B (bitwise XOR) @@ -242,7 +242,7 @@ int main() { 0x02 >> 1; // => 0x01 (bitwise right shift (by 1)) // Be careful when shifting signed integers - the following are undefined: - // - shifting into the sign bit of a signed integer (int a = 1 << 32) + // - shifting into the sign bit of a signed integer (int a = 1 << 31) // - left-shifting a negative number (int a = -1 << 2) // - shifting by an offset which is >= the width of the type of the LHS: // int a = 1 << 32; // UB if int is 32 bits wide |