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/fatfs-2.7.6/
Dff.c1280 BYTE bm, bv; in find_bitmap() local
1290 i = val / 8 % SS(fs); bm = 1 << (val % 8); in find_bitmap()
1293 bv = fs->win[i] & bm; bm <<= 1; /* Get bit value */ in find_bitmap()
1295 val = 0; bm = 0; i = SS(fs); in find_bitmap()
1303 } while (bm != 0); in find_bitmap()
1304 bm = 1; in find_bitmap()
1321 BYTE bm; in change_bitmap() local
1329 bm = 1 << (clst % 8); /* Bit mask in the byte */ in change_bitmap()
1334 if (bv == (int)((fs->win[i] & bm) != 0)) return FR_INT_ERR; /* Is the bit expected value? */ in change_bitmap()
1335 fs->win[i] ^= bm; /* Flip the bit */ in change_bitmap()
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