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<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
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<!DOCTYPE MAN SYSTEM "../../manrev.dtd">
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<LANGUAGE>eng</LANGUAGE>
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<TYPE>Scilab Function</TYPE>
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<DATE>April 1993</DATE>
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<SHORT_DESCRIPTION name="dhnorm"> discrete H-infinity norm</SHORT_DESCRIPTION>
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<CALLING_SEQUENCE_ITEM>hinfnorm=dhnorm(sl,[tol],[normax]) </CALLING_SEQUENCE_ITEM>
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<PARAM_NAME>sl</PARAM_NAME>
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<SP>: the state space system (<VERB>syslin</VERB> list) (discrete-time)</SP>
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<PARAM_NAME>tol</PARAM_NAME>
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<SP>: tolerance in bisection step, default value <VERB>0.01</VERB></SP>
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<PARAM_NAME>normax</PARAM_NAME>
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<SP>: upper bound for the norm , default value is <VERB>1000</VERB></SP>
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<PARAM_NAME>hinfnorm</PARAM_NAME>
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<SP>: the discrete infinity norm of <VERB>Sl</VERB></SP>
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produces the discrete-time infinity norm of a state-space system
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(the maximum over all frequencies on the unit circle of the maximum singular value).</P>