LSL Partial Sums Benchmark

<lsl> // // The Computer Language Shootout // http://shootout.alioth.debian.org/ // // contributed by Isaac Gouy // modified by Babbage Linden //

test() {

 integer n = 250;
 
 float twothirds = 2.0/3.0;

 float a1 = 0.0;
 float a2 = 0.0;
 float a3 = 0.0;
 float a4 = 0.0;
 float a5 = 0.0;
 float a6 = 0.0;
 float a7 = 0.0;
 float a8 = 0.0;
 float a9 = 0.0;
 float alt = -1.0;

 integer k=0;
 while (n >= (++k))
 {
    float k2 = llPow(k,2);
    float k3 = k2*k;
    float sk = llSin(k);
    float ck = llCos(k);
    alt = -alt;

    a1 += llPow(twothirds,k-1);
    a2 += llPow(k,-0.5);
    a3 += 1.0/(k*(k+1.0));
    a4 += 1.0/(k3 * sk*sk);
    a5 += 1.0/(k3 * ck*ck);
    a6 += 1.0/k;
    a7 += 1.0/k2;
    a8 += alt/k;
    a9 += alt/(2.0*k -1.0);
 }
 
 llSay(0, (string)a1 + " (2/3)^k");
 llSay(0, (string)a2 + " k^-0.5");
 llSay(0, (string)a3 + " 1/k(k+1)");
 llSay(0, (string)a4 + " Flint Hills");
 llSay(0, (string)a5 + " Cookson Hills");
 llSay(0, (string)a6 + " Harmonic");
 llSay(0, (string)a7 + " Riemann Zeta");
 llSay(0, (string)a8 + " Alternating Harmonic");
 llSay(0, (string)a9 + " Gregory");

}

time() {

   llResetTime();
   llSay(0, "Starting tests...");
   test();
   llSay(0, "Finished tests in " + (string)llGetTime() + "s");

}

default {

   state_entry()
   {
       time();
   }
   
   touch_start(integer num)
   {
       time();
   }

} </lsl>