c++ - Where does Z_int come from? -

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i've been browsing lot of perl c library extensions , have noticed, in date::calc, z_int , z_long , standard (vs 'int' , 'long').

i'm assuming posix standard google has failed me while trying find definition or source syntax. know comes from, or have reference this?

thanks.

it's not standard thing; think it's steffen beyer's personal notation uses in number of modules (including date::calc). z here math sense of z denote set of integers; z_int signed int, whereas n_int (from n, set of natural numbers) unsigned int. these typedefs defined in the header file toolbox.h in modules use them.


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