AIMAG.html 5.6 KB

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  68. <a name="AIMAG-_002d_002d_002d-Imaginary-part-of-complex-number"></a>
  69. <h3 class="section">9.11 <code>AIMAG</code> &mdash; Imaginary part of complex number</h3>
  70. <a name="index-AIMAG"></a>
  71. <a name="index-DIMAG"></a>
  72. <a name="index-IMAG"></a>
  73. <a name="index-IMAGPART"></a>
  74. <a name="index-complex-numbers_002c-imaginary-part"></a>
  75. <dl compact="compact">
  76. <dt><em>Description</em>:</dt>
  77. <dd><p><code>AIMAG(Z)</code> yields the imaginary part of complex argument <code>Z</code>.
  78. The <code>IMAG(Z)</code> and <code>IMAGPART(Z)</code> intrinsic functions are provided
  79. for compatibility with <code>g77</code>, and their use in new code is
  80. strongly discouraged.
  81. </p>
  82. </dd>
  83. <dt><em>Standard</em>:</dt>
  84. <dd><p>Fortran 77 and later, has overloads that are GNU extensions
  85. </p>
  86. </dd>
  87. <dt><em>Class</em>:</dt>
  88. <dd><p>Elemental function
  89. </p>
  90. </dd>
  91. <dt><em>Syntax</em>:</dt>
  92. <dd><p><code>RESULT = AIMAG(Z)</code>
  93. </p>
  94. </dd>
  95. <dt><em>Arguments</em>:</dt>
  96. <dd><table>
  97. <tr><td width="15%"><var>Z</var></td><td width="70%">The type of the argument shall be <code>COMPLEX</code>.</td></tr>
  98. </table>
  99. </dd>
  100. <dt><em>Return value</em>:</dt>
  101. <dd><p>The return value is of type <code>REAL</code> with the
  102. kind type parameter of the argument.
  103. </p>
  104. </dd>
  105. <dt><em>Example</em>:</dt>
  106. <dd><div class="smallexample">
  107. <pre class="smallexample">program test_aimag
  108. complex(4) z4
  109. complex(8) z8
  110. z4 = cmplx(1.e0_4, 0.e0_4)
  111. z8 = cmplx(0.e0_8, 1.e0_8)
  112. print *, aimag(z4), dimag(z8)
  113. end program test_aimag
  114. </pre></div>
  115. </dd>
  116. <dt><em>Specific names</em>:</dt>
  117. <dd><table>
  118. <tr><td width="20%">Name</td><td width="20%">Argument</td><td width="20%">Return type</td><td width="25%">Standard</td></tr>
  119. <tr><td width="20%"><code>AIMAG(Z)</code></td><td width="20%"><code>COMPLEX Z</code></td><td width="20%"><code>REAL</code></td><td width="25%">GNU extension</td></tr>
  120. <tr><td width="20%"><code>DIMAG(Z)</code></td><td width="20%"><code>COMPLEX(8) Z</code></td><td width="20%"><code>REAL(8)</code></td><td width="25%">GNU extension</td></tr>
  121. <tr><td width="20%"><code>IMAG(Z)</code></td><td width="20%"><code>COMPLEX Z</code></td><td width="20%"><code>REAL</code></td><td width="25%">GNU extension</td></tr>
  122. <tr><td width="20%"><code>IMAGPART(Z)</code></td><td width="20%"><code>COMPLEX Z</code></td><td width="20%"><code>REAL</code></td><td width="25%">GNU extension</td></tr>
  123. </table>
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