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--- manual:chapter6:constants:cmd_piconst [2019/10/20 00:30]
jojo1973 created
+++ manual:chapter6:constants:cmd_piconst [2021/09/19 15:08] (current)
jojo1973
@@ Line 1: / Line 1: @@
 ==== π ====
-----
 <callout type="primary" color="" icon="fa fa-book" title="Synopsis">
 ----
@@ Line 9: / Line 8: @@
 ----
 ^  __Input Stack__  ^  ^  __Output Stack__  ^
-|  |  **→**  |  **'π'**  |
+|  ****  |  **→**  |  **C<sub>π</sub>**  |
-|  //Level 1//  |  //→//  |  //Level 1//  |
+|  //Level 1 / Argument 1//  |  //→//  |  //Level 1//  |
 {{page>manual:chapter6:aux:legend&nofooter&noeditbtn&inline}}
-|**Type**| [[manual:chapter5:basics#analytic-functions|Analytic Function]]  ||
+| **Keyword type**  | [[manual:chapter5:basics#analytic-functions|Analytic Function]]  ||
-|**Parallel list processing**| [[manual:chapter5:listproc#group-1commands-that-cannot-parallel-process|Group 1]]  ||
+| **Parallel list processing capabilities**  | [[manual:chapter5:listproc#group-1commands-that-cannot-parallel-process|Group 1]]  | //Commands that cannot parallel process//  |
-|**Affected by flags**| None  ||
+| **Affected by flags**  | //None//  ||
 </callout>
@@ Line 23: / Line 37: @@
 The ''π'' function pushes on the stack a symbolic representation of the constant $π$.
-Application of the ''[[manual:chapter6:operators:cmd_ovr_num|→NUM]]'' operator returns its closest approximation to 2000-digits accuracy, irrespective of the numeric precision defined by ''[[manual:chapter6:arithmetic:cmd_setprec|SETPREC]]''. This is done to ensure maximum accuracy.
+Application of the ''[[manual:chapter6:operators:cmd_ovr_num|→NUM]]'' operator returns its closest approximation to 2000-digits accuracy, irrespective of the numeric precision defined by ''[[manual:chapter6:arithmetic:cmd_setprec|SETPREC]]''. This is done to ensure maximum accuracy if the symbolic expression is ultimately converted to a real number.
 </callout>
 <callout type="warning" icon="true" title="Compatibility">
 ----
-This command is only partially compatible with userRPL.
+''π'' is not fully equivalent to its **userRPL** counterpart.
 In particular:
-  * userRPL returns the closest approximation of $π$ to 12-digits accuracy.
+  * **userRPL** returns the closest approximation of $π$ to 12-digits accuracy.
 </callout>
 <callout type="info" icon="true" title="Usage">
 ----
-The following program
+**__Input__**
 <code>
 « 6 SETPREC
@@ Line 45: / Line 59: @@
 »
 </code>
-will result in
+\\
+**__Output__**
 <code>
-:                3.14159265359.
+:
-:                      3.14159.
+:
-……………………………………………………………………………………
+:                        3.14159265359.
+:                              3.14159.
+…………………………………………………………………………………………………………
 </code>
 </callout>
@@ Line 55: / Line 73: @@
 <callout color="darkgray" icon="fa fa-hand-o-right" title="Related Commands">
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-{{page>manual:chapter6:operators&nofooter&noeditbtn&inline}}
+{{page>manual:chapter6:constants&nofooter&noeditbtn&inline}}
 </callout>