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  57. <a name="gettimeofday"></a>
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  63. <a name="gettimeofday-1"></a>
  64. <h4 class="unnumberedsubsubsec">gettimeofday</h4>
  65. <a name="index-gettimeofday_002c-file_002di_002fo-system-call"></a>
  66. <dl compact="compact">
  67. <dt>Synopsis:</dt>
  68. <dd><div class="smallexample">
  69. <pre class="smallexample">int gettimeofday(struct timeval *tv, void *tz);
  70. </pre></div>
  71. </dd>
  72. <dt>Request:</dt>
  73. <dd><p>&lsquo;<samp>Fgettimeofday,<var>tvptr</var>,<var>tzptr</var></samp>&rsquo;
  74. </p>
  75. </dd>
  76. <dt>Return value:</dt>
  77. <dd><p>On success, 0 is returned, -1 otherwise.
  78. </p>
  79. </dd>
  80. <dt>Errors:</dt>
  81. <dd>
  82. <dl compact="compact">
  83. <dt><code>EINVAL</code></dt>
  84. <dd><p><var>tz</var> is a non-NULL pointer.
  85. </p>
  86. </dd>
  87. <dt><code>EFAULT</code></dt>
  88. <dd><p><var>tvptr</var> and/or <var>tzptr</var> is an invalid pointer value.
  89. </p></dd>
  90. </dl>
  91. </dd>
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