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CVS commit: src/sys/dev/dtv
Module Name: src
Committed By: apb
Date: Sat Jul 16 22:30:26 UTC 2011
Instead of returning an integer between 0 and 31 (scaled by 1<<24), use
(0.5 + x/2 - 1/x) as an approximation to log2(x) for x from 1 to 2, and
scale the input to fit this range. Now the error is always less than
Also add an test program, hidden behind #ifdef TEST_DTV_MATH, to print
a table of expected and actual results, and the errors.
To generate a diff of this commit:
cvs rdiff -u -r1.2 -r1.3 src/sys/dev/dtv/dtv_math.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
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