36 lines
1.5 KiB
HTML
36 lines
1.5 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<html lang="en">
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<head>
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<title>TTCalc - user defined variables and functions</title>
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<link rel="stylesheet" href="styles.css" type="text/css">
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<object type="application/x-oleobject" classid="clsid:1e2a7bd0-dab9-11d0-b93a-00c04fc99f9e">
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<param name="Keyword" value="user defined variables">
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<param name="Keyword" value="user defined functions">
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</object>
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</head>
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<body>
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<h1>User defined variables and functions</h1>
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<p>
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You are allowed to define your own variables and functions. As a name of a variable or a function
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can be a name consists of letters and digits but the first character must be a letter. Names are case-insensitive
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that means 'name' is the same as 'NaMe'. For example these
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are correct names: a, b, c3, myname, etc. During defining variables and functions you can call another
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variables and functions but you cannot call a variable or a function twice. Recurrence calling are not allowed.
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</p>
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<p>
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Functions can get maximum 9 parameters. You have to specify how many parameters your function takes and
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you can refer to them by using the variable 'x' with a number from 1 to 9 ('x' without a number means 'x1').
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For example you can define a function 'xy' as 'x1*x2' (of course without apostrophes), set the 'parameters' on 2
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and then put into the edit box an expression 'xy(10;20)', the result will be 200. Note that we use a semicolon
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to separate arguments in a function.
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</p>
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</body>
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</html>
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