The Tor Browser / file comparison
comparison: tools/footprint/linear-regression.awk
tools/footprint/linear-regression.awk
- branch
- TOR_BUG_9701
- changeset 3
- 141e0f1194b1
equal
deleted
inserted
replaced
| -1:000000000000 | 0:959c78316451 |
|---|---|
| 1 # This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 # License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 # file, You can obtain one at http://mozilla.org/MPL/2.0/. | |
| 4 | |
| 5 function regress(DATAPOINTS,SX,SY,SXY,SX2) | |
| 6 { | |
| 7 b1 = (DATAPOINTS * SXY - SX * SY) / (DATAPOINTS * SX2 - SX * SX); | |
| 8 b0 = (SY - b1 * SX ) / DATAPOINTS; | |
| 9 return b1 " * x + " b0; | |
| 10 } | |
| 11 | |
| 12 BEGIN { | |
| 13 if (!Skip) Skip = 0; | |
| 14 if (Interval) | |
| 15 { | |
| 16 Count = 0; | |
| 17 IntervalCount = 0; | |
| 18 } | |
| 19 } | |
| 20 | |
| 21 NR>Skip { | |
| 22 sx += $1; | |
| 23 sy += $2; | |
| 24 sxy += $1 * $2; | |
| 25 sx2 += $1 * $1; | |
| 26 #print NR " " sx " " sy " " sxy " " sx2 | |
| 27 | |
| 28 if (Interval) | |
| 29 { | |
| 30 if(Count == Interval-1) | |
| 31 { | |
| 32 IntervalCount += 1; | |
| 33 | |
| 34 print NR-Count, "-", NR, ": ", regress(Count,isx,isy,isxy,isx2); | |
| 35 | |
| 36 Count = 0; | |
| 37 isx = 0; | |
| 38 isy = 0; | |
| 39 isxy = 0; | |
| 40 isx2 = 0; | |
| 41 } | |
| 42 else | |
| 43 { | |
| 44 Count += 1; | |
| 45 isx += $1; | |
| 46 isy += $2; | |
| 47 isxy += $1 * $2; | |
| 48 isx2 += $1 * $1; | |
| 49 } | |
| 50 } | |
| 51 } | |
| 52 | |
| 53 END { | |
| 54 if(Interval) { | |
| 55 print NR-Count, "-", NR, ": ", regress(Count,isx,isy,isxy,isx2); | |
| 56 } | |
| 57 print regress(NR-Skip, sx, sy, sxy, sx2); | |
| 58 } |
