Difference between revisions of "LlFloor"

Revision as of 10:44, 21 January 2014

Function: integer llFloor( float val );

Returns an integer that is the integer value of val rounded towards negative infinity (return <= val).

• float

–

Any valid float value

The function returns 0x80000000 if the arithmetic result is outside of the range of valid integers -2147483648 <= val <= 2147483647.

<lsl>default {

  state_entry()
  {
      llSay(0,"The floor value of -4.5 is: "+(string)llFloor(-4.5) );
      //Returns "The floor value of -4.5 is: -5"

      llSay(0,"The floor value of -4.9 is: "+(string)llFloor(-4.9) );
      //Returns "The floor value of -4.9 is: -5"

      llSay(0,"The floor value of -4.1 is: "+(string)llFloor(-4.1) );
      //Returns "The floor value of -4.1 is: -5"

      llSay(0,"The floor value of 4.5 is: "+(string)llFloor(4.5) );
      //Returns "The floor value of 4.5 is: 4"

      llSay(0,"The floor value of 4.9 is: "+(string)llFloor(4.9) );
      //Returns "The floor value of 4.9 is: 4"

      llSay(0,"The floor value of 4.1 is: "+(string)llFloor(4.1) );
      //Returns "The floor value of 4.1 is: 4"
   }

}</lsl>

For positive values, it is quicker and shorter to simply cast the float to an integer. i=(integer)f is 32 bytes shorter than i=llFloor(f) (in Byte Code) and about 30 times faster in execution, while giving the same result.

Signature
function integer llFloor( float val );

@@ Line 7: / Line 7: @@
 |return_text=that is the integer value of {{LSLP|val}} rounded towards negative infinity <code>(return <= {{LSLPT|val}})</code>.
 |spec
-|caveats=The returned value is -2147483648 (0x80000000) if the arithmetic result is outside of the range of valid integers (-2147483648 to 2147483647)
+|caveats=
+* The function returns <code>{{HoverText|0x80000000|-2147483648}}</code> if the arithmetic result is outside of the range of valid [[Integer|integers]] <code>-2147483648 <= {{LSLP|val}} <= 2147483647</code>.
 |examples=<lsl>default
 {

•	llRound	–	Rounds the float to an integer towards the closest integer
•	llCeil	–	Rounds the float to an integer towards positive infinity