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llCos

float llCos(float Theta)

Returns the cosine of Theta (Theta in radians).

Parameters

Theta (float)

Technical Details

Return Type: float
Energy: 10

// Touch the object with this script in it to see the cosine of random numbers!
default
{
    touch_start(integer num)
    {
        float r = llFrand(TWO_PI);
        llOwnerSay("The cosine of " + (string)r + " in radians or " + (string)(r * RAD_TO_DEG) + " in degrees is " + (string)llCos(r));
    }
}

Caveats

Due to IEEE754 single-precision floating-point limitations:

llCos(PI_BY_TWO) returns -4.371139E-8 (hex: 0xB33BBD2E) instead of 0
llCos(PI/3.0) returns 0.49999997 (hex: 0x3EFFFFFF) instead of 0.5

Be aware of these precision issues when comparing cosine results to exact values.

See Also