Difference between revisions of "LlRound"

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|spec
|spec
|caveats=
|caveats=
* The function returns <code>{{LSL Hex|0x80000000|-2147483648}}</code> if the integer value nearest to {{LSLP|val}} would be outside of the range of valid [[Integer|integers]] <code>-2147483648 <= {{LSLP|val}} <= 2147483647</code>.
* The returned value is -2147483648 (0x80000000) if the arithmetic result is outside of the range of valid integers (-2147483648 to 2147483647 inclusive).
|constants
|constants
|examples=<lsl>default
|examples=<lsl>default
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   state_entry()
   state_entry()
   {   
   {   
       llSay(0,"The rounded value of -4.9 is: "+(string)llRound(-4.9) );
       llSay(0, "The rounded value of -4.9 is: "+(string)llRound(-4.9) );
       //Returns "The rounded value of -4.9 is: -5"
       //Returns "The rounded value of -4.9 is: -5"
        
        
       llSay(0,"The rounded value of -4.1 is: "+(string)llRound(-4.1) );
       llSay(0, "The rounded value of -4.1 is: "+(string)llRound(-4.1) );
       //Returns "The rounded value of -4.1 is: -4"
       //Returns "The rounded value of -4.1 is: -4"
        
        
       llSay(0,"The rounded value of 4.5 is: "+(string)llRound(4.5) );
       llSay(0, "The rounded value of 4.5 is: "+(string)llRound(4.5) );
       //Returns "The rounded value of 4.5 is: 5"
       //Returns "The rounded value of 4.5 is: 5"
        
        
       llSay(0,"The rounded value of 4.9 is: "+(string)llRound(4.9) );
       llSay(0, "The rounded value of 4.9 is: "+(string)llRound(4.9) );
       //Returns "The rounded value of 4.9 is: 5"
       //Returns "The rounded value of 4.9 is: 5"
        
        
       llSay(0,"The rounded value of 4.1 is: "+(string)llRound(4.1) );
       llSay(0, "The rounded value of 4.1 is: "+(string)llRound(4.1) );
       //Returns "The rounded value of 4.1 is: 4"
       //Returns "The rounded value of 4.1 is: 4"


       llSay(0,"The rounded value of -4.5 is: "+(string)llRound(-4.5) );
       llSay(0, "The rounded value of -4.5 is: "+(string)llRound(-4.5) );
       //Returns "The rounded value of -4.5 is: -4"
       //Returns "The rounded value of -4.5 is: -4"
       // Note: the above result not -5 as would be expected, due to the inaccuracy involved in storing -4.5 as a float
       // Note: the above result not -5 as would be expected, due to the inaccuracy involved in storing -4.5 as a float

Revision as of 13:44, 20 March 2014

Summary

Function: integer llRound( float val );

Returns the integer that val is closest to.

• float val Any valid float value

If the absolute value of the tenths position is 4 or less, val is rounded off; otherwise, val is rounded towards infinity of like signedness of val.

Caveats

  • The returned value is -2147483648 (0x80000000) if the arithmetic result is outside of the range of valid integers (-2147483648 to 2147483647 inclusive).
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Examples

<lsl>default {

  state_entry()
  {  
      llSay(0,  "The rounded value of -4.9 is: "+(string)llRound(-4.9) );
      //Returns "The rounded value of -4.9 is: -5"
      
      llSay(0,  "The rounded value of -4.1 is: "+(string)llRound(-4.1) );
      //Returns "The rounded value of -4.1 is: -4"
      
      llSay(0,  "The rounded value of 4.5 is: "+(string)llRound(4.5) );
      //Returns "The rounded value of 4.5 is: 5"
      
      llSay(0,  "The rounded value of 4.9 is: "+(string)llRound(4.9) );
      //Returns "The rounded value of 4.9 is: 5"
      
      llSay(0,  "The rounded value of 4.1 is: "+(string)llRound(4.1) );
      //Returns "The rounded value of 4.1 is: 4"
      llSay(0,  "The rounded value of -4.5 is: "+(string)llRound(-4.5) );
      //Returns "The rounded value of -4.5 is: -4"
      // Note: the above result not -5 as would be expected, due to the inaccuracy involved in storing -4.5 as a float
   }
}</lsl>

See Also

Functions

•  llCeil Rounds the float to an integer towards positive infinity
•  llFloor Rounds the float to an integer towards negative infinity

Deep Notes

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Signature

function integer llRound( float val );