Difference between revisions of "LlLog"

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<lsl>float LogBaseN = llLog(value) / llLog(Base); //This technique introduces errors but is the only way</lsl>
 
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Revision as of 17:00, 11 December 2008

Summary

Function: float llLog( float val );

Returns a float that is the natural logarithm of val.
If val <= 0 return 0.0 instead.

• float val

To get the base 10 logarithm use llLog10.

Examples

<lsl> default {

 state_entry()
 {
   float num1 = llFrand(100.0);
   llOwnerSay("The natural logarithm of " + (string)num1 + " is " + (string)llLog(num1));
 }

}

</lsl>

Notes

There are only two log functions llLog and llLog10. Errors introduced as a result of floating-point arithmetic are most noticable when working with logarithms. llLog should be used instead of llLog10 when converting the base of the logarithm. <lsl>float LogBaseN = llLog(value) / llLog(Base); //This technique introduces errors but is the only way</lsl>

See Also

Functions

•  llLog10
•  llPow
•  llSqrt

Articles

•  Wikipedia:Natural_logarithm

Deep Notes

Search JIRA for related Issues

Signature

function float llLog( float val );