Xbase++ - Function Round()

Rounds a numeric value to a specific number of decimal places.

Round( <nValue>, <nDecimals>) --> nRoundedValue

<nValue> is a numeric expression whose value is rounded.

<nDecimals> generally specifies the number of places after the decimal point in the rounded result. However, when <nDecimals> is negative, it specifies the number of places before the decimal point that are rounded.

Round() returns a numeric value.

When <nDecimals> is greater than or equal to zero, the numeric function Round() rounds the value <nValue> to the number of decimal places specified by <nDecimals>. When <nDecimals> is a negative value, the places before the decimal point are rounded. The digits 5 to 9 are rounded up, while the digits 0 to 4 round down.

Round()

// The example shows various results of the function Round(). 

PROCEDURE Main 

   SET DECIMALS TO 4 
   SET FIXED ON 

   ? Round( 121.4487, 0)            // result: 121.0000 
   ? Round( 121.4487, 1)            // result: 121.4000 
   ? Round( 121.4487, 2)            // result: 121.4500 
   ? Round( 121.4487, 3)            // result: 121.4490 

   ? Round( 121.4487,-1)            // result: 120.0000 
   ? Round( 121.4487,-2)            // result: 100.0000 
   ? Round( 121.4487,-3)            // result:   0.0000 

   SET FIXED OFF 

   ? Round( 121.4487, 0)            // result: 121 
   ? Round( 121.4487, 1)            // result: 121.4 
   ? Round( 121.4487, 2)            // result: 121.45 
   ? Round( 121.4487, 3)            // result: 121.449 

   ? Round( 121.4487,-1)            // result: 120 
   ? Round( 121.4487,-2)            // result: 100 
   ? Round( 121.4487,-3)            // result:   0 

RETURN

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Function Round() Foundation