float llFabs(float FloatVal)

Any float value (can be negative)

The result will be a float that is the absolute value of FloatVal, that is, the value with any negative sign removed.

More rigorously, the result will be the same as FloatVal if FloatVal is positive or zero, and -FloatVal if it was negative.

• To determine the absolute value of an integer, use llAbs.
• "Minus zero" (-0.0) is a special case of a float that can rarely appear in some situations. The absolute value of Minus zero is 0.0. This should not be a concern anyway, as minus zero is mostly transparent to all calculations (e.g. minus zero is considered equal to zero, and doesn't err when taking its square root).
• The absolute value of NaN is NaN. The absolute value of Infinity and -Infinity is Infinity.

float F = -2.25;
F = llFabs(F); // sets F to 2.25
F = llFabs(F); // F is still 2.25 because it was already positive
F = llFabs(0.0); // F is zero

llFabs-example.lsl

default
{
    state_entry()
    {
        llOwnerSay((string)llFabs(-PI) + ", " + (string)llFabs(0.5)); // will print: 3.141593, 0.500000
    }
}

• llAbs takes the absolute value of an integer.
• llVecMag takes the norm (magnitude) of a vector.