[amibroker] 313 iterations instead of 30,629

["DIMITRIS TSOKAKIS" <TSOKAKIS@xxxxxxxxx>]

Method 1 needs 30,629 iterations to calculate the SQRT(1000).
Method 2 needs only 313 for the same accuracy.
In this case a longer code [Method 2] is  much faster. 
Verify in your Indicator Builder.

NUM=1000;
//Method 1
DEC=3;It=0;Y=0;I=1;STEP=10^(-DEC); 
while(I^2<NUM)
{
Y=I;
I=I+STEP;
It=It+1;
}
Title="SQRT("+WriteVal(NUM,1.0)+")="+WriteVal(Y,1+0.1*DEC)+" [Method 
1 : "+WriteVal(It,1.0)+" iterations]";
//Method 2
DEC0=1;It0=0;Y0=0;I=1;STEP0=10^(-DEC0); 
while(I^2<NUM)
{
Y0=I;
I=I+STEP0;
It0=It0+1;
DEC1=DEC0+1;
}
Title=Title+"\n\nSQRT("+WriteVal(NUM,1.0)+")="+WriteVal(Y0,1+0.1*DEC0)
+" ["+WriteVal(It0,1.0)+" iterations]";
I=Y0;STEP1=10^(-DEC1);It1=0;Y1=0;
while(I^2<NUM)
{
Y1=I;
I=I+STEP1;
It1=It1+1;
DEC2=DEC1+1;
}
Title=Title+"\nSQRT("+WriteVal(NUM,1.0)+")="+WriteVal(Y1,1+0.1*DEC1)
+" ["+WriteVal(It1,1.0)+" iterations]";
I=Y1;STEP2=10^(-DEC2);It2=0;Y2=0;
while(I^2<NUM)
{
Y2=I;
I=I+STEP2;
It2=It2+1;
DEC3=DEC2+1;
}
Title=Title+"\nSQRT("+WriteVal(NUM,1.0)+")="+WriteVal(Y2,1+0.1*DEC2)
+" ["+WriteVal(It2,1.0)+" iterations]";
Title=Title+"\n\nSQRT("+WriteVal(NUM,1.0)+")="+WriteVal(Y2,1+0.1*DEC2)
+" [Method2 : "+WriteVal(It0+It1+It2,1.0)+" iterations]";

Dimitris



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