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5.1.28 ERROR

Syntax:
ERROR ( string_expression )
Type:
none
Purpose:
Immediately interrupts the current computation, returns to the top-level, and displays the argument string_expression as error message.

Note:
This should be used as an emergency, resp. failure, exit within procedures.

Example:
 
int i=1;
proc myError() {ERROR("Need to leave now");i=2;}
myError();
==>    ? Need to leave now
==>    ? leaving ::myError
i;
==> 1