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Valued Contributor III
1,048 Views

What is the best Floating number method?

Hello friends... 

 

I want to know what is the efficient code to implement this equation : 

1/4 ( x+y) + 1/2 

 

However, inputs are integers , and the output will be also rounded to integer. But the intermediate calculations needs to use 1/4 and 1/2. 

 

Kindly inform me about the best way to code this equation. 

 

Thanks...:)
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4 Replies
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Valued Contributor III
12 Views

use fixed point. Its just integer with an offset (so easily implemented in an FPGA).

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Valued Contributor III
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PS: (x+y)/4 + 1/2 is identical to the equation (x+y + 2) /4. divides by 2^n are just a bit shift.

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Valued Contributor III
12 Views

 

--- Quote Start ---  

use fixed point. Its just integer with an offset (so easily implemented in an FPGA). 

--- Quote End ---  

 

 

yes use fixe point. just add x + y then add half of result and truncate 2 LSBs 

 

I am assuming you want to add x+y, divide by 4 then round
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Valued Contributor III
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Thank you very much. I am coding it right now to see how it is going. Best regards.

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