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Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.9.5) (Whoop whoop pull up - 18507 |
m WP:ADOPTYPO boolean -> Boolean |
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{{Use dmy dates|date=April 2019|cs1-dates=y}}
{{Use list-defined references|date=October 2023}}
{{Infobox programming language
| name = RPL
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}}
[[File:HP48G.jpg | thumb | 220x124px | right | HP 48G calculator, uses RPL ]]
'''RPL'''{{ref|rpl_acronym_note_1}} is a [[calculator|handheld calculator]] operating system and application [[programming language]] used on [[Hewlett-Packard]]'s scientific graphing [[Reverse Polish Notation|RPN]] (Reverse Polish Notation) calculators of the [[HP-28 series|HP 28]], [[HP 48 series|48]], [[HP 49 series|49]] and [[HP 50g|50]] series, but it is also usable on non-RPN calculators, such as the [[HP 38G|38]], [[HP 39/40 series|39 and 40]] series. Internally, it was also utilized by the [[HP-17B|17B]], [[HP-18C|18C]], [[HP-19B|19B]] and [[HP-27S|27S]].<ref name="RPLMAN"/>
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Postfix conditional testing may be accomplished by using the IFT ("if-then") and IFTE ("if-then-else") functions.
IFT and IFTE pop two or three commands off the stack, respectively. The topmost value is evaluated as a
The following example uses the IFT function to pop an object from the bottom of the stack and, if it is equal to 1, replaces it with "One":
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