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new build method for macway

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tmk 2010-10-27 20:51:45 +09:00
parent 461e0d3d8c
commit 2f80e790c6
17 changed files with 432 additions and 227 deletions
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18
util.c Normal file
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@ -0,0 +1,18 @@
#include "util.h"
int bitpop(uint8_t bits)
{
int c;
for (c = 0; bits; c++)
bits &= bits -1;
return c;
}
int biton(uint8_t bits)
{
int n = 0;
if (bits >> 4) { bits >>= 4; n += 4;}
if (bits >> 2) { bits >>= 2; n += 2;}
if (bits >> 1) { bits >>= 1; n += 1;}
return n;
}