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Re: working with fixed point


From: Per Persson
Subject: Re: working with fixed point
Date: Sun, 24 Aug 2003 12:08:51 +0200

How about
B=7;
## Truncation of x to B fractional bits
x_qt = 2^-B*floor(x*2^B);
## Rounding of x to B fractional bits
x_qr = 2^-B*floor(x*2^B + 0.5);

You'll have to check for range overflow etc. manually.

HTH,
Per

On Sunday, August 24, 2003, at 11:30 AM, address@hidden wrote:

Hi,
I want to convert a floating point octave program into fixed point (with
about 7 bits representation) - for simulating its behaviour on fpga.
How can I do it?
Thanks
Ravid




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