rb_big2ulong      107 include/ruby/intern.h unsigned long rb_big2ulong(VALUE);
rb_big2ulong      108 include/ruby/intern.h #define rb_big2uint(x) rb_big2ulong(x)
rb_big2ulong      155 numeric.c      	*ret = (unsigned int)rb_big2ulong((VALUE)val);
rb_big2ulong     2574 numeric.c                  unsigned long ul = rb_big2ulong(val);