Integer

Consider Integer to be equivalent to the C type int. The built-in type Integer must support

addition:

for instance x + y,

multiplication:

for instance x * y,

subtraction:

for instance x - y,

division-remainder:

for instance x rem y,

unary-minus:

for instance -x,

equality-test:

for instance x = y,

unequality-test:

for instance x -= y,

strict-inequality-test:

for instance x < y,

large-inequality-test:

for instance x <= y,

printing:

for instance print(x).