types.LongType.
*pend will
point to the first character in str which follows the
representation of the number. If base is 0, the radix
will be determined base on the leading characters of str: if
str starts with '0x' or '0X', radix 16 will be
used; if str starts with '0', radix 8 will be used;
otherwise radix 10 will be used. If base is not 0, it
must be between 2 and 36, inclusive. Leading spaces
are ignored. If there are no digits, ValueError will be
raised.
-1.0 will be returned.
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