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27.5 Calling imported functions</div>
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The usage of imported functions is identical as for native SystemVerilog functions., hence the usage and syntax for calling imported functions is identical as for native SystemVerilog functions. Specifically, arguments with default values can be omitted from the call; arguments can be passed by name, if all formal arguments are named.</p></div>
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<a href="00319.html" target="topic">27.5.1 Argument passing</a> </div></td><td class="Element206" valign="top" width="50%">
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Argument passing for imported functions is ruled by the WYSIWYG principle: What You Specify Is What You Get, see Section 27.5.1.1. The evaluation order of formal arguments follows general SystemVerilog rules.<br><br>Argument compatibility and coercion rules are the same as for native SystemVerilog functions. If a coercion is needed, a temporary variable is created and passed as the actual argument. For input and inout arguments, the temporary variable is initialized with the value of actual argument with the appropriate coercion; for output or inout arguments, the value of the temporary variable is assigned to the actual argument with the appropriate... <a href="00319.html" target="topic">more</a> </div></td></tr><tr>
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The SystemVerilog simulator is responsible for handling value changes for output and inout arguments. Such changes shall be detected and handled after control returns from imported functions to SystemVerilog code.<br><br>For output and inout arguments, the value propagation (i.e., value change events) happens as if an actual argument was assigned a formal argument immediately after control returns from imported functions. If there is more than one argument, the order of such assignments and the related value change propagation follows general SystemVerilog rules. </div></td></tr></table></div></div>
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