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Overview
| Comment: | Silence compiler warning |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | revised_text | tip-466 |
| Files: | files | file ages | folders |
| SHA1: |
96115bb33cc2befb4712a464cc334638 |
| User & Date: | fvogel 2017-02-21 22:53:52 |
References
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2017-02-22
| ||
| 23:13 | • Ticket [0819cc40] revised_text: Patches to build on Windows and Linux status still Open with 3 other changes artifact: 653c5849 user: fvogel | |
Context
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2017-02-22
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| 23:08 | [0819cc4018]: Patch from Paul Obermeier to make the branch build check-in: 2f3be9a6 user: fvogel tags: revised_text_ober, tip-466 | |
| 16:56 | When building on Windows, inline is already defined in makefile.vc (-Dinline=__inline) regardless of the compiler version check-in: 8e67d858 user: fvogel tags: revised_text, tip-466 | |
|
2017-02-21
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| 22:53 | Silence compiler warning check-in: 96115bb3 user: fvogel tags: revised_text, tip-466 | |
| 19:20 | Fix [710f7fd44b]: Missing dependency in win/Makefile.in check-in: 21c86cec user: fvogel tags: revised_text, tip-466 | |
Changes
Changes to generic/tkBitField.c.
| ︙ | ︙ | |||
123 124 125 126 127 128 129 |
LsbIndex(uint32_t x)
{
/* Source: http://graphics.stanford.edu/~seander/bithacks.html#ZerosOnRightLinear */
static const unsigned MultiplyDeBruijnBitPosition[32] = {
0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8,
31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9
};
| | | 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 |
LsbIndex(uint32_t x)
{
/* Source: http://graphics.stanford.edu/~seander/bithacks.html#ZerosOnRightLinear */
static const unsigned MultiplyDeBruijnBitPosition[32] = {
0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8,
31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9
};
return MultiplyDeBruijnBitPosition[((uint32_t) ((x & -((int32_t) x))*0x077cb531)) >> 27];
}
# else
/* The "classical" method, but about 20% slower than the DeBruijn method on my system. */
static unsigned
LsbIndex(uint32_t x)
{
unsigned ctz = 32;
|
| ︙ | ︙ |