From: Gerrit Renker Date: Sun, 3 Dec 2006 16:52:01 +0000 (-0200) Subject: [DCCP] tfrc: Fix small error in reverse lookup of p for given f(p) X-Git-Tag: v2.6.20-rc1~34^2~40^2~13^2~1^2~4 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=90fb0e60dd9178dbca2e42c682c483cdb7ea9f2d;p=pandora-kernel.git [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 Acked-by: Ian McDonald Signed-off-by: Arnaldo Carvalho de Melo --- Reading git-diff-tree failed