Thanks. Increasing X by the value 3 could be (no movement of stack):

If so far the value "10" is in X (integer for making later for example STO IND Y), then

ISG X

""

ISG X

""

ISG X

""

would increase X by 3 and the stack has not moved.

Result in X would be 13.

Any other function like "ST3+" X would have been better (perhaps I must make it..).

Same for "ST2+" X

Increasing by 1 can stay

- Code: Select all
`ISG X`

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comments/remarks are welcome.

Background: having 10 in X mean for me, the content of register 10 is the first value of a quaternion (a quaternion has 4 parameters).

Accessing the other values of the quaternion would be done via increasing X with 1 then 2 then 3 in a program (and RCL IND X etc.).