$BOOLEVAL | $B - Boolean expression evaluation mode

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boolean-evaluation-directive = ( $BOOLEVAL | $B ) directive-toggle .

Toggles the complete evaluation mode for boolean expressions (that contains boolean OR or AND operators).

If OFF, the generated code stops the expression evaluation as soon as the result is known unambiguously.

When ON, the generated code evaluates all the expression, using a boolean stack to store intermediate sub-expressions values.

Default is ON.