ruby_dtoa        1435 internal.h     char *ruby_dtoa(double d_, int mode, int ndigits, int *decpt, int *sign, char **rve);
ruby_dtoa         398 marshal.c      	char *e, *p = ruby_dtoa(d, 0, 0, &decpt, &sign, &e);
ruby_dtoa         781 numeric.c          p = ruby_dtoa(value, 0, 0, &decpt, &sign, &e);
ruby_dtoa        1259 sprintf.c      #define BSD__dtoa ruby_dtoa