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This is documentation for Caché & Ensemble.

For information on converting to InterSystems IRIS, see the InterSystems IRIS Adoption Guide and the InterSystems IRIS In-Place Conversion Guide, both available on the WRC Distributions page (login required).

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Contains the value of pi.




$ZPI contains the value of the numeric constant Pi to eighteen decimal places (3.141592653589793238).

This value is frequently used with trigonometric functions, such as the sine function $ZSIN.