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===== Function: llSqrt =====

<code lsl2>
float llSqrt(float fval)
</code>

Return the square root of the argument, that is, a number such that when multiplied by itself, results in the given argument.

===== Parameters =====

=== fval ===
The $lty[float] value to take the square root of.

===== Return value =====

The square root of the given $ty[float].

===== Notes =====

  * If you need the square root of 2, using $lct[SQRT2] instead of calling this function will save code and processing time.
  * An input of -0.0 will return -0.0.
  * Any value less than zero will return $nan.

===== Short examples =====

<code lsl2>
float f;
f = llSqrt(4);  // sets f to 2.0 because 2*2=4
f = llSqrt(25); // sets f to 5.0 because 5*5=25
f = llSqrt(2);  // sets f to approx. 1.414214, which multiplied by itself gives approx. 2
f = SQRT2;      // same as above, but more efficient
f = llSqrt(-1); // sets f to NaN (Not a Number) under Mono; crashes under LSO
</code>

===== See also =====

  * $lfn[llPow] raises a number to any power.
  * $lct[SQRT2] is a constant with the square root of 2.
  * $lty[float] type and associated caveats and limitations.