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author | Jing Yu <jingyu@google.com> | 2009-11-05 15:11:04 -0800 |
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committer | Jing Yu <jingyu@google.com> | 2009-11-05 15:11:04 -0800 |
commit | df62c1c110e8532b995b23540b7e3695729c0779 (patch) | |
tree | dbbd4cbdb50ac38011e058a2533ee4c3168b0205 /gcc-4.3.1/libiberty/ffs.c | |
parent | 8d401cf711539af5a2f78d12447341d774892618 (diff) | |
download | toolchain_gcc-df62c1c110e8532b995b23540b7e3695729c0779.tar.gz toolchain_gcc-df62c1c110e8532b995b23540b7e3695729c0779.tar.bz2 toolchain_gcc-df62c1c110e8532b995b23540b7e3695729c0779.zip |
Check in gcc sources for prebuilt toolchains in Eclair.
Diffstat (limited to 'gcc-4.3.1/libiberty/ffs.c')
-rw-r--r-- | gcc-4.3.1/libiberty/ffs.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc-4.3.1/libiberty/ffs.c b/gcc-4.3.1/libiberty/ffs.c new file mode 100644 index 000000000..603cbe8ed --- /dev/null +++ b/gcc-4.3.1/libiberty/ffs.c @@ -0,0 +1,26 @@ +/* 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; +} + |