manual:chapter6:stack:cmd_ifte [newRPL User Manual]

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==== IFTE ====
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<callout type="primary" color="" icon="fa fa-book" title="Synopsis">
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Execute objects on the stack conditionally
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<callout color="green" icon="fa fa-indent" title="Stack Diagram">
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^  __Input Stack__  ^^^  ^  __Output Stack__  ^
|  **1**  |  **O<sub>true</sub>**  |  **O<sub>false</sub>**  |  **→**  |  **[O<sub>true</sub>]<sub>XEQ</sub>**  |
|  **0**  |  **O<sub>true</sub>**  |  **O<sub>false</sub>**  |  **→**  |  **[O<sub>false</sub>]<sub>XEQ</sub>**  |
|  //Level 3 / Argument 1//  |  //Level 2 / Argument 2//  |  //Level 1 / Argument 3//  |  //→//  |  //Level 1//  | 

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|**Type**| [[manual:chapter5:basics#functions|Function]]  ||
|**Parallel list processing**| [[manual:chapter5:listproc#group-2commands-that-must-use-dolist-to-parallel-process|Group 2]]  || 
|**Affected by flags**| None  ||
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<callout color="orangered" icon="fa fa-comment" title="Description">
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The ''IFTE'' function tests the object on level 3 of the stack: if the test returns ''1'' then it ''[[manual:chapter6:operators:cmd_ovr_xeq|XEQ]]''tes the object on level 2, otherwise it ''[[manual:chapter6:operators:cmd_ovr_xeq|XEQ]]''tes the object on level 1.

''IFTE'' can be used in symbolic expressions to define piecewise functions.
</callout>

<callout type="success" icon="true" title="Compatibility">
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This command is fully compatible with userRPL.
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<callout type="info" icon="true" title="Usage">
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<code>
3:                             1
2:               { 'X' 'Y' 'Z' }
1:                           1_m
……………………………………………………………………………………
IFTE
</code>
will result in
<code>
1:               { 'X' 'Y' 'Z' }
……………………………………………………………………………………

</code>
</callout>

<callout color="darkgray" icon="fa fa-hand-o-right" title="Related Commands">
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