DelphiBasics
 SqrFunction Gives the square of a number System unit
 1 function Sqr(Number   Integer):Integer; 2 function Sqr (Number     Int64:Int64; 3 function Sqr (Number Extended:Extended;
Description
The Sqr function returns the square of a Number.

Sqr(Number) = Number * Number

The number may be an integer or floating point type.

Integer, Int64 numbers

If the square of the number exceeds the capacity of the target variable, then the result is :

Result Mod Capacity

Extended numbers

If the square of the number exceeds the capacity, EOverFlow exception is raised.

Special values are treated as follows:

 Infinity, -Infinity : Infinity NaN (Not a Number) : NaN
Related commands
 Dec Decrement an ordinal variable Inc Increment an ordinal variable Sqrt Gives the square root of a number Sum Return the sum of an array of floating point values
Download this web site as a Windows program.

 Example code : Find the square of various values var   number, squared : Byte;   float : Extended; begin   // The square of 15 = 225   number  := 15;   squared := Sqr(number);   ShowMessageFmt('%d squared = %d',[number, squared]);   // The square of 17 = 289   // But result exceeds byte size, so result = 289 MOD 256 = 33   number  := 17;   squared := Sqr(number);   ShowMessageFmt('%d squared = %d (see code above)',[number, squared]);   // The square of infinity is still infinity   float := Infinity;   float := Sqr(float);   ShowMessageFmt('Infinity squared = %f',[float]); end; Show full unit code 15 squared = 225   17 squared = 33 (see code above)   Infinity squared = INF