Pragmatic directives: Difference between revisions
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For external routines, the defaults are used. <br><br>
=={{header|RPL}}==
Pragmatic directives are given through system flags that can bet with the <code>SF</code> and <code>CF</code> commands anywhere in a program.
System flags are a legacy of programmable calculators and unfortunately, which flag to set or reset for a specific directive depends on the calculator model you are using.
As an example, here are the directives controlled by flags on HP-28 models:
* LAST variable activated
* Immediate evaluation of constants (e, pi...) and functions
* length of binary words
* display and print formats
* decimal sign and object separator
* real number display format
* sound on/off
* underflow/overflow error handling
Fortunately, some of them can also be operated through language commands, such as <code>STWS</code> (defines the length of binary words) or <code>RAD</code> (defines radian as the trigonometric unit).
=={{header|Scala}}==
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