Mercurial > hg > CbC > CbC_gcc
view libiberty/ffs.c @ 18:33936f7f2835
Added tag gcc.4.4.0 for changeset a06113de4d67
author | kent@firefly.cr.ie.u-ryukyu.ac.jp |
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date | Thu, 24 Sep 2009 13:06:16 +0900 |
parents | a06113de4d67 |
children |
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/* ffs -- Find the first bit set in the parameter @deftypefn Supplemental int ffs (int @var{valu}) Find the first (least significant) bit set in @var{valu}. Bits are numbered from right to left, starting with bit 1 (corresponding to the value 1). If @var{valu} is zero, zero is returned. @end deftypefn */ int ffs (register int valu) { register int bit; if (valu == 0) return 0; for (bit = 1; !(valu & 1); bit++) valu >>= 1; return bit; }