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### Trunc

#### Synopsis

    function Trunc (x: Real): Integer;

#### Description

`Trunc` returns the integer part of a floating point number as an integer. Use `Int` to get the integer part as a floating point number.

#### Conforming to

`Trunc` is defined in ISO 7185 Pascal and supported by all known Pascal variants.

#### Example

    program TruncDemo;

    begin
      WriteLn (Frac (12.345) : 1 : 5);  { 0.34500 }
      WriteLn (Int (12.345) : 1 : 5);  { 12.00000 }
      WriteLn (Round (12.345) : 1);  { 12 }
      WriteLn (Trunc (12.345) : 1);  { 12 }

      WriteLn (Frac (-12.345) : 1 : 5);  { -0.34500 }
      WriteLn (Int (-12.345) : 1 : 5);  { -12.00000 }
      WriteLn (Round (-12.345) : 1);  { -12 }
      WriteLn (Trunc (-12.345) : 1);  { -12 }

      WriteLn (Frac (12.543) : 1 : 5);  { 0.54300 }
      WriteLn (Int (12.543) : 1 : 5);  { 12.00000 }
      WriteLn (Round (12.543) : 1);  { 13 }
      WriteLn (Trunc (12.543) : 1);  { 12 }

      WriteLn (Frac (-12.543) : 1 : 5);  { -0.54300 }
      WriteLn (Int (-12.543) : 1 : 5);  { -12.00000 }
      WriteLn (Round (-12.543) : 1);  { -13 }
      WriteLn (Trunc (-12.543) : 1);  { -12 }
    end.

#### See also

Real Types, Real, Int, Frac, Round.