(%) special character
Some predefined variables names begin with %
, such as
%i
(for sqrt(-1)
), %inf
(for Infinity
), %pi
(for 3.14...
),
%T
(for the boolean constant "true"
),...
In addition, functions whose names begin with %
are special :
they are used for primitives and operators overloading.
For example the function %r_m_r
performs the multiplication
(m
) operation x*y
for x
and
y
rational matrices (r
).
The coding conventions are described in the overloading
help page.