23 lines
652 B
Java
23 lines
652 B
Java
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package org.broadinstitute.sting.utils;
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public class QualityUtils {
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private QualityUtils() {}
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static public double qualToProb(byte qual) {
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return 1.0 - Math.pow(10.0, ((double) qual)/-10.0);
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}
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static public byte probToQual(double prob) {
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return (byte) Math.round(-10.0*Math.log10(1.0 - prob + 0.0001));
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}
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static public byte qualAndProbToCompressedQuality(int baseIndex, double prob) {
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byte compressedQual = (byte) baseIndex;
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byte cprob = (byte) (100.0*prob);
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byte qualmask = (byte) 252;
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compressedQual += ((cprob << 2) & qualmask);
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return compressedQual;
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}
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}
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