The BBC and Master Computer Public Domain Library

9DB5 '=' and other relational operators

Submitted by Steve Fewell

Description:

Check which operator (<, = or >) we have. If we have the Less Than operator "<",
then jump to &9DCD to handle Less Than.
If we have the Greater Than operator ">", then jump to &9DF5 to handle Greater Than.
Otherwise, we have '=' Equal To. This is handled as below:

Update the flags with the current value type (in A).
Call &9CCA to Compare the current value with the second value and set the flags
according to which value is greater, or whether the values are equal.

If the zero flag is set then the values are equal, so set the IWA to TRUE; otherwise,
the values aren't equal so set the IWA to FALSE.
Exit with A = #&40 (as we are currently handling an Integer value).

Disassembly for the '=' and other relational operators routine