Doug Burkett - author detailed information

Coding User RPL Math Functions 1.0 (details)	49/50 ENG 133 KB
This short paper compares program size and execution time for numeric mathematical functions using stack-based implementation, algebraic expressions, and local variables. The results show the code size and execution times for a sample expression coded with the different methods. The results apply to the 50g and similar models.
By Doug Burkett.	2024-06-02

Ellipse Perimeter Approximation by Ramanujan 1.0 (details)	49/50 ENG 179 KB / 1 KB
Approximates the perimeter of an ellipse using an approximation by Ramanujan or with the elliptic integral of the first kind. Program listings for the Ramanujan approximation for 12 other HP calculators are given. A program for the elliptic integral of the first kind using a Chebyshev approximation is also included. Complete PDF documentation included.
By Doug Burkett.	2024-12-15

PCON --- CODATA 2018 Physical Constants 1.0 (details)	49/50 ENG 809 KB / 30 KB
PCON provides all the physical constants (about 350) from the CODATA 2018 revision of suggested values. The constants are returned with tag identifiers and as unit objects depending on flag 61. Utility programs are provided: to retrieve a single constant object; to retrieve a constant's numerical value; to retrieve a constant's uncertainty; and to rebuild the library. PCON is distributed as a library with the User RPL source and comprehensive PDF documentation.
By Doug Burkett.	2023-05-07