_BitScanReverse    98 maint/gnulib/lib/count-leading-zeros.h   COUNT_LEADING_ZEROS (__builtin_clz, _BitScanReverse, unsigned int);
_BitScanReverse   105 maint/gnulib/lib/count-leading-zeros.h   COUNT_LEADING_ZEROS (__builtin_clzl, _BitScanReverse, unsigned long int);
_BitScanReverse    46 maint/gnulib/lib/integer_length.c   if (_BitScanReverse (&bit, x))
_BitScanReverse    41 maint/gnulib/lib/integer_length_l.c # define MSVC_BUILTIN _BitScanReverse
_BitScanReverse    53 maint/gnulib/lib/integer_length_l.c   if (_BitScanReverse (&bit, x))