fixnum_to_string 2994 src/data.c           char *p = fixnum_to_string (XFIXNUM (number), buffer, end);
fixnum_to_string  647 src/lisp.h     extern char *fixnum_to_string (EMACS_INT number, char *buffer, char *end);
fixnum_to_string 2287 src/print.c    	    char *start = fixnum_to_string (i, buf, end);