зеркало из https://github.com/mozilla/gecko-dev.git
59 строки
1.3 KiB
Awk
Executable File
59 строки
1.3 KiB
Awk
Executable File
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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function regress(DATAPOINTS,SX,SY,SXY,SX2)
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{
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b1 = (DATAPOINTS * SXY - SX * SY) / (DATAPOINTS * SX2 - SX * SX);
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b0 = (SY - b1 * SX ) / DATAPOINTS;
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return b1 " * x + " b0;
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}
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BEGIN {
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if (!Skip) Skip = 0;
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if (Interval)
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{
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Count = 0;
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IntervalCount = 0;
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}
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}
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NR>Skip {
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sx += $1;
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sy += $2;
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sxy += $1 * $2;
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sx2 += $1 * $1;
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#print NR " " sx " " sy " " sxy " " sx2
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if (Interval)
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{
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if(Count == Interval-1)
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{
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IntervalCount += 1;
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print NR-Count, "-", NR, ": ", regress(Count,isx,isy,isxy,isx2);
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Count = 0;
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isx = 0;
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isy = 0;
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isxy = 0;
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isx2 = 0;
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}
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else
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{
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Count += 1;
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isx += $1;
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isy += $2;
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isxy += $1 * $2;
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isx2 += $1 * $1;
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}
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}
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}
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END {
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if(Interval) {
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print NR-Count, "-", NR, ": ", regress(Count,isx,isy,isxy,isx2);
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}
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print regress(NR-Skip, sx, sy, sxy, sx2);
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}
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