__builtin_clz 98 maint/gnulib/lib/count-leading-zeros.h COUNT_LEADING_ZEROS (__builtin_clz, _BitScanReverse, unsigned int); __builtin_clz 41 maint/gnulib/lib/integer_length.c return NBITS - __builtin_clz (x); __builtin_clz 644 maint/gnulib/lib/vasnprintf.c s = __builtin_clz (msd);