is 0, @code{strtol} will look for the prefixes @code{0} and @code{0x}
to indicate bases 8 and 16, respectively, else default to base 10.
When the base is 16 (either explicitly or implicitly), a prefix of
-@code{0x} is allowed. The handling of endptr is as that of
+@code{0x} is allowed. The handling of @var{endptr} is as that of
@code{strtod} above.
@end deftypefn