Sharp PC-1500A Compiler

[Thomas Klemm]

(12-02-2024 11:49 PM)toml_12953 Wrote:  It chokes on the Python function sqrt! Calculators have a square root function, no?

Python doesn't provide a sqrt function. It has to be imported from a library.

From Help & User Guide:

Quote:What is not supported
And won’t be

• Imports and libraries
  

From List of HP42S Commands Reference:
\(
\begin{array}{|c|c|}
\hline
\text{HP42S Command} & \text{Supported in Python to RPN} & \text{Comments Parameters} & \text{Description (original HP42S)} \\
\hline
\text{SQRT} & \text{✓} & \text{(n)} & \text{Square root. Returns √x.} \\
\hline
\end{array}
\)

The following Python program works:

Code:

def radius(x, y):
    return SQRT(x**2 + y**2)

The generated code for the HP-42S can be optimized to:

Code:

LBL "radius"
STO 01          // param: y
RDN
STO 00          // param: x
RDN
RCL 00          // x
X↑2
RCL 01          // y
X↑2
+
SQRT            // Square root. Returns √x.
RTN             // return

You could also use the built-in function →POL instead:

Code:

r, phi = toPol(x, y)