18 lines
571 B
ObjectPascal
18 lines
571 B
ObjectPascal
function isNumeric(const potentialNumeric: string): boolean;
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var
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potentialInteger: integer;
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potentialReal: real;
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integerError: integer;
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realError: integer;
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begin
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integerError := 0;
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realError := 0;
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// system.val attempts to convert numerical value representations.
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// It accepts all notations as they are accepted by the language,
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// as well as the '0x' (or '0X') prefix for hexadecimal values.
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val(potentialNumeric, potentialInteger, integerError);
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val(potentialNumeric, potentialReal, realError);
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isNumeric := (integerError = 0) or (realError = 0);
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end;
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