Re: Need help to convert my C++ codes to Java with GUI

On Sat, 23 Feb 2008 20:46:10 -0800 (PST), Katak
<vampireex@xxxxxxxxxxx> wrote, quoted or indirectly quoted someone who
said :

double exponent = Math.pow(2, power);
result += ((bin.charAt(i) - 48) * (exponent));
power++;

Shift would be more accurate and much much faster.

power = 1;
....
power <<= 1;

or even better just shift (bin.charAt(i) - '0') directly by i.

see http://mindprod.com/jgloss/shift.html
http://mindprod.com/jgloss/binary.html
http://mindprod.com/jgloss/precedence.html
http://mindprod.com/jgloss/bit.html
http://mindprod.com/jgloss/masking.html
--

Roedy Green Canadian Mind Products
The Java Glossary
http://mindprod.com
.

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