This is an old revision of the document!
e
Synopsis
Push the symbolic constant 'e' on the stack
Stack Diagram
| Input Stack | Output Stack | |
|---|---|---|
| → | 'e' | |
| Level 1 | → | Level 1 |
| Type | Analytic Function | |
| Parallel list processing | Group 1 | |
| Affected by flags | None | |
Description
The e function pushes on the stack a symbolic representation of the constant $e$.
Application of the →NUM operator returns its closest approximation to 2000-digits accuracy, irrespective of the numeric precision defined by SETPREC. This is done to ensure maximum accuracy if the symbolic expression is finally converted to a real number.
Compatibility
This command is only partially compatible with userRPL.
In particular:
- userRPL returns the closest approximation of $e$ to 12-digits accuracy.
Usage
The following program
« 6 SETPREC e →NUM DUP 1 * »
will result in
2: 2.718281828459. 1: 2.71828. ……………………………………………………………………………………