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37 lines
688 B
Text
37 lines
688 B
Text
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module Measurement;
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export {
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redef enum Calculation += {
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## Find the maximum value.
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MAX
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};
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redef record ResultVal += {
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## For numeric data, this tracks the maximum value given.
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max: double &optional;
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};
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}
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hook add_to_reducer_hook(r: Reducer, val: double, data: DataPoint, rv: ResultVal)
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{
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if ( MAX in r$apply )
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{
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if ( ! rv?$max )
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rv$max = val;
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else if ( val > rv$max )
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rv$max = val;
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}
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}
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hook compose_resultvals_hook(result: ResultVal, rv1: ResultVal, rv2: ResultVal)
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{
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if ( rv1?$max && rv2?$max )
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result$max = (rv1$max > rv2$max) ? rv1$max : rv2$max;
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else if ( rv1?$max )
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result$max = rv1$max;
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else if ( rv2?$max )
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result$max = rv2$max;
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}
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