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<!DOCTYPE MAN SYSTEM "../../manrev.dtd">
<MAN>
  <LANGUAGE>eng</LANGUAGE>
  <TITLE>h_norm</TITLE>
  <TYPE>Scilab Function</TYPE>
  <DATE>April 1993</DATE>
  <SHORT_DESCRIPTION name="dhnorm"> discrete H-infinity norm</SHORT_DESCRIPTION>
  <CALLING_SEQUENCE>
    <CALLING_SEQUENCE_ITEM>hinfnorm=dhnorm(sl,[tol],[normax])  </CALLING_SEQUENCE_ITEM>
  </CALLING_SEQUENCE>
  <PARAM>
    <PARAM_INDENT>
      <PARAM_ITEM>
        <PARAM_NAME>sl</PARAM_NAME>
        <PARAM_DESCRIPTION>
          <SP>: the state space system (<VERB>syslin</VERB> list) (discrete-time)</SP>
        </PARAM_DESCRIPTION>
      </PARAM_ITEM>
      <PARAM_ITEM>
        <PARAM_NAME>tol</PARAM_NAME>
        <PARAM_DESCRIPTION>
          <SP>: tolerance in bisection step, default value <VERB>0.01</VERB></SP>
        </PARAM_DESCRIPTION>
      </PARAM_ITEM>
      <PARAM_ITEM>
        <PARAM_NAME>normax</PARAM_NAME>
        <PARAM_DESCRIPTION>
          <SP>: upper bound for the norm , default value is <VERB>1000</VERB></SP>
        </PARAM_DESCRIPTION>
      </PARAM_ITEM>
      <PARAM_ITEM>
        <PARAM_NAME>hinfnorm</PARAM_NAME>
        <PARAM_DESCRIPTION>
          <SP>: the discrete infinity norm of <VERB>Sl</VERB></SP>
        </PARAM_DESCRIPTION>
      </PARAM_ITEM>
    </PARAM_INDENT>
  </PARAM>
  <DESCRIPTION>
    <P>
    produces the discrete-time infinity norm  of a state-space system 
    (the maximum over all frequencies on the unit circle of the maximum singular value).</P>
  </DESCRIPTION>
  <SEE_ALSO>
    <SEE_ALSO_ITEM>
      <LINK>h_norm</LINK>
    </SEE_ALSO_ITEM>
    <SEE_ALSO_ITEM>
      <LINK>linfn</LINK>
    </SEE_ALSO_ITEM>
  </SEE_ALSO>
</MAN>
