111 lines
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111 lines
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<title>%SWITCH built-in function</title>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">%SWITCH built-in function</h1>
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<div><p>The switch built-in function (%SWITCH) compares one or more of
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eight switches with the eight switch settings already established for the
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job and returns a logical value of '0' or '1'. </p>
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<div class="section"><p>The initial values of the switches for the job are determined
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first by the <span class="cmdname">Create Job Description (CRTJOBD)</span> command;
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the default value is <samp class="codeph">00000000</samp>. You can change this if necessary
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using the SWS parameter on the <span class="cmdname">Submit Job (SBMJOB)</span>, <span class="cmdname">Change
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Job (CHGJOB)</span>, or JOB command; the default for these is the job description
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setting. Other high-level languages may also set job switches.</p>
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<p>If,
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in the comparison of your %SWITCH values against the job values, every switch
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is the same, a logical value of '1' (true) is returned. If any switch tested
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does not have the value indicated, the result is a '0' (false).</p>
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<p>The
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syntax of the %SWITCH built-in function is: </p>
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<pre>%SWITCH(8-character-mask)</pre>
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<p>The 8-character mask is used to indicate which job switches
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are to be tested, and what value each switch is to be tested for. Each position
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in the mask corresponds with one of the eight job switches in a job. Position
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1 corresponds with job switch 1, position 2 with switch 2, and so on. Each
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position in the mask can be specified as one of three values: 0, 1, or X.</p>
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<dl><dt class="dlterm">0</dt>
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<dd>The corresponding job switch is to be tested for a 0 (off).</dd>
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<dt class="dlterm">1</dt>
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<dd>The corresponding job switch is to be tested for a 1 (on).</dd>
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<dt class="dlterm">X</dt>
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<dd>The corresponding job switch is not to be tested. The value in the switch
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does not affect the result of %SWITCH.</dd>
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</dl>
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<p>If <samp class="codeph">%SWITCH(0X111XX0)</samp> is specified, job
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switches 1 and 8 are tested for 0s; switches 3, 4, and 5 are tested for 1s;
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and switches 2, 6, and 7 are not tested. If each job switch contains the
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value (1 or 0 only) shown in the mask, the result of %SWITCH is true '1'.</p>
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<p>Switches
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can be tested in a CL procedure to control the flow of the procedure. This
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function is used in CL procedures with the <span class="cmdname">If (IF)</span> and <span class="cmdname">Change
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Variable (CHGVAR)</span> commands. Switches can be changed in a CL procedure
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by the <span class="cmdname">Change Job (CHGJOB)</span> command. For CL procedures,
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these changes take effect immediately.</p>
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</div>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="ifcd.htm">%SWITCH with the IF command</a></strong><br />
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On the <span class="cmdname">If (IF)</span> command, %SWITCH can be specified
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on the COND parameter as the logical expression to be tested.</li>
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<li class="ulchildlink"><strong><a href="chgv.htm">%SWITCH with the Change Variable (CHGVAR) command</a></strong><br />
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On the <span class="cmdname">Change Variable (CHGVAR)</span> command, you
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can specify %SWITCH to change the value of a logical variable. </li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="contp.htm" title="You can use commands to change the flow of logic within your CL procedure.">Control processing within a CL procedure</a></div>
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</div>
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<div class="reltasks"><strong>Related tasks</strong><br />
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<div><a href="valuv.htm" title="You can change the value of a CL variable using the Change Variable (CHGVAR) command.">Change the value of a variable</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="rbam6builtinfunc.htm" title="CL provides several built-in functions.">Built-in functions for CL</a></div>
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</div>
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<div class="relinfo"><strong>Related information</strong><br />
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<div><a href="../clfinder/finder.htm">CL command finder</a></div>
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<div><a href="../cl/chgjob.htm">Change Job (CHGJOB) command</a></div>
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<div><a href="../cl/sbmjob.htm">Submit Job (SBMJOB) command</a></div>
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<div><a href="../cl/chgjobd.htm">Change Job Description (CHGJOBD) command</a></div>
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<div><a href="../cl/chgvar.htm">Change Variable (CHGVAR) command</a></div>
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</div>
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</div>
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</body>
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</html>
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