NAME
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zero_type - return the type of zero
SYNTAX
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int zero_type(int a);
DESCRIPTION
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There are many types of zeros out there, or at least there are two.
One is returned by normal functions, and one returned by mapping
lookups and find_call_out() when what you looked for wasn't there.
The only way to separate these two kinds of zeros is zero_type.
When doing a find_call_out or mapping lookup, zero_type on this value
will return 1 if there was no such thing present in the mappping, or
no such call_out could be found. Otherwize zero_type will return zero.
KEYWORDS
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int and mapping
SEE ALSO
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find_call_out