Difference between revisions of "AGI Command Reference - Arithmetic Commands"
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[[AGI Command Reference - Sound Resource Management Commands|9]] | | [[AGI Command Reference - Sound Resource Management Commands|9]] | | ||
[[AGI Command Reference - Text Management Commands|10]] | | [[AGI Command Reference - Text Management Commands|10]] | | ||
Revision as of 14:59, 28 December 2013
Tutorials and Guides Table of Contents
AGI Command Reference Index
Commands that operate on variables.
increment(n);
The value of the variable Var(n) is incremented by one.
Examples:
Var(n) = Var(n)+1. If the value is already 255, it is left unchanged.
decrement(n);
The value of the variable Var(n) is decremented by one.
Examples:
Var(n) = Var(n)-1. If the value is 0, it is left unchanged.
assign(n, m);
Variable Var(n) is assigned the value m.
Examples:
Var(n) = m
assignv(n, m);
Variable Var(n) is assigned the value of Var(m).
Examples:
Var(n) = Var(m).
addn(n, m);
The value of variable Var(n) is incremented by m.
Examples:
Var(n) = Var(n) + m.
addv(n, m);
The value of variable Var(n) is incremented by the value of Var(m).
Examples:
Var(n) = Var(n) + m.
Notes:
Now what happens in the above two commands on 8-bit overflow: does the result wrap over 0 or stays 255? i.e. is 250 + 10 == 4 or 250 + 10 == 255?]
subn(n, m);
The value of Var(n) is decremented by m.
Examples:
Var(n) = Var(n) - m
subv(n, m);
The value of Var(n) is decremented by Var(m).
Examples:
Var(n) = Var(n) - Var(m).
Notes:
Again, what happens when the result must be negative: is 1 - 2 == 255 or 1 - 2 == 0?
lindirectn(n, m);
Variable Var(i) where i is the value of Var(n) is assigned a value m.
Examples:
Var(Var(n)) = m.
lindirectv(n, m);
Variable Var(i) where i is the value of Var(n) is assigned the value of Var(m).
Examples:
Var(Var(n)) = Var(m).
rindirect(n, m);
Variable Var(n) is assigned the value of Var(i) where i is the value of Var(m).
Examples:
Var(n) = Var(Var(m)).
muln(n, m);
Variable Var(n) is multiplied by m.
Examples:
Var(n) = Var(n) * m.
mulv(n, m);
Variable Var(n) is multiplied by the value of Var(m).
Examples:
Var(n) = Var(n) * Var(m).
Notes:
What happens on overflow?
divn(n, m)
Variable Var(n) is divided by m.
Examples:
Var(n) = Var(n) / m.
divv(n, m)
Variable Var(n) is divided by the value of Var(m).
Examples:
Var(n) = Var(n) / Var(m).
Notes:
What happens on division by 0?
random(n, m, k)
Variable Var(k) is assigned a random value in the range between n and m. Now let us consider the commands changing flag values.
Notes:
Remember that a flag can only have a value 0 or 1.
set(n)
flag(n) is set to 1.
set.v(n)
flag(i), where i is the value of var (n), is set to 1.
Examples:
flag(var(n)) = 1.
reset(n)
flag(n) is set to 0.
reset.v(n)
flag(i), where i is the value of var (n), is set to 0.
Examples:
flag(var(n)) = 0.
toggle(n)
flag(n) toggles its value.
toggle.v(n)
flag(i), where i is the value of var (n)
Examples:
flag(var(n)), toggles is value.
Tutorials and Guides Table of Contents
AGI Command Reference Index
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