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author | Gerrit Renker <gerrit@erg.abdn.ac.uk> | 2006-12-03 14:52:01 -0200 |
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committer | Arnaldo Carvalho de Melo <acme@mandriva.com> | 2006-12-03 14:52:01 -0200 |
commit | 90fb0e60dd9178dbca2e42c682c483cdb7ea9f2d (patch) | |
tree | 09e750ded7fb3b34a0b146ef96a03a9495a9c37f /net/rose/sysctl_net_rose.c | |
parent | 50ab46c790a3408c441ba4c2faa9555cacc20028 (diff) |
[DCCP] tfrc: Fix small error in reverse lookup of p for given f(p)
This fixes the following small error in tfrc_calc_x_reverse_lookup.
1) The table is generated by the following equations:
lookup[index][0] = g((index+1) * 1000000/TFRC_CALC_X_ARRSIZE);
lookup[index][1] = g((index+1) * TFRC_CALC_X_SPLIT/TFRC_CALC_X_ARRSIZE);
where g(q) is 1E6 * f(q/1E6)
2) The reverse lookup assigns an entry in lookup[index][small]
3) This index needs to match the above, i.e.
* if small=0 then
p = (index + 1) * 1000000/TFRC_CALC_X_ARRSIZE
* if small=1 then
p = (index+1) * TFRC_CALC_X_SPLIT/TFRC_CALC_X_ARRSIZE
These are exactly the changes that the patch makes; previously the code did
not conform to the way the lookup table was generated (this difference resulted
in a mean error of about 1.12%).
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Diffstat (limited to 'net/rose/sysctl_net_rose.c')
0 files changed, 0 insertions, 0 deletions