On Thu, 26 Aug 2021, Santi via fpc-pascal wrote:
El 26/08/2021 a las 10:00, Ondrej Pokorny via fpc-pascal escribió:
On 26.08.2021 09:40, Santiago A. via fpc-pascal wrote:
const
DefaultDelta:extended = 1E-8;
function F(const x:extended; const delta:extended=DefaultDelta):extended;
function G(const x:extended; const delta:extended=DefaultDelta):extended;
But I get "Illegal expression" in the header function declaration.
Const parameters don't accept const expressions?
You need:
const
DefaultDelta = 1E-8;
Thanks, it works fine.
But I can't see why specifying the type doesn't work;
Because a typed constant behaves more like a variable then like a constant.
A leftover from Turbo Pascal, which used this construct for initialized
variables.
const
DefaultDelta = Extended(1E-8);
is a real typed constant.
Michael.
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