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TReal
is a 64-bit double-precision type, used as
the argument type for all math functions, and the default type of
floating-point literals.
TReal64
and TReal32
are
available when the precise size is important.
Symbian OS floating-point arithmetic conforms to the IEEE754 specification.
Most Symbian OS implementations do not have hardware floating-point support. As a result, floating-point arithmetic is noticeably less efficient than integer arithmetic. It should be avoided unless demanded by the problem type.