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Reference for unit 'sysutils' (#rtl)

FloatToStr

Convert a float value to a string using a fixed format.

Declaration

Source position: line 0

function FloatToStr(

Value: Double

):String; function FloatToStr(

Value: Double;

const FormatSettings: TFormatSettings

):String; function FloatToStr(

Value: Single

):String; function FloatToStr(

Value: Single;

const FormatSettings: TFormatSettings

):String; function FloatToStr(

Value: Currency

):String; function FloatToStr(

Value: Currency;

const FormatSettings: TFormatSettings

):String; function FloatToStr(

Value: Comp

):String; function FloatToStr(

Value: Comp;

const FormatSettings: TFormatSettings

):String; function FloatToStr(

Value: Int64

):String; function FloatToStr(

Value: Int64;

const FormatSettings: TFormatSettings

):String;

Description

FloatToStr converts the floating point variable Value to a string representation. It will choose the shortest possible notation of the two following formats:

Fixed format: will represent the string in fixed notation,
Decimal format: will represent the string in scientific notation.

More information on these formats can be found in FloatToStrF. FloatToStr is completely equivalent to the following call:

FloatToStrF(Value, ffGeneral,15, 0);

Errors

None.

See also

FloatToStrF		Convert a float value to a string using a given format.
FormatFloat		Format a float according to a certain mask.
StrToFloat		Convert a string to a floating-point value.

Example

Program Example67;

{ This program demonstrates the FloatToStr function }

Uses sysutils;

Procedure Testit (Value : Extended);

begin
  Writeln (Value,' -> ',FloatToStr(Value));
  Writeln (-Value,' -> ',FloatToStr(-Value));
end;

Begin
  Testit (0.0);
  Testit (1.1);
  Testit (1.1e-3);
  Testit (1.1e-20);
  Testit (1.1e-200);
  Testit (1.1e+3);
  Testit (1.1e+20);
  Testit (1.1e+200);
End.

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