[Octave-bug-tracker] [bug #41461] cast to integer type incorrect

[Lachlan Andrew]

Follow-up Comment #9, bug #41461 (project octave):

Mike has raised the valid points that  char(int8(-128))  is invalid, while 
char(-128) == char(0).

I agree that giving an error for char(x) with x>255 is better than giving a
value different from Matlab's, but Octave currently gives char(256) ==
char(0), which is no better than Mike's suggestion.

I propose the following behaviour:
1. char (x) = char(0)  for x<0 for all (non-complex) numeric types.  Based on
Michael's experiment, I assume this is what Matlab does.
2. char (x) undefined for x > 255 for all numeric types.

Mike, would you be interested in modifying your patch to implement this, of
others approve, or have you moved on?

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