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  53. <a name="cimag_002c-cimagf_002c-cimagl_002d_002d_002dimaginary-part"></a>
  54. <h3 class="section">2.12 <code>cimag</code>, <code>cimagf</code>, <code>cimagl</code>&mdash;imaginary part</h3>
  55. <a name="index-cimag"></a>
  56. <a name="index-cimagf"></a>
  57. <a name="index-cimagl"></a>
  58. <p><strong>Synopsis</strong>
  59. </p><div class="example">
  60. <pre class="example">#include &lt;complex.h&gt;
  61. double cimag(double complex <var>z</var>);
  62. float cimagf(float complex <var>z</var>);
  63. long double cimagl(long double complex <var>z</var>);
  64. </pre></div>
  65. <p><strong>Description</strong><br>
  66. These functions compute the imaginary part of <var>z</var>.
  67. </p>
  68. <p><code>cimagf</code> is identical to <code>cimag</code>, except that it performs
  69. its calculations on <code>float complex</code>.
  70. </p>
  71. <p><code>cimagl</code> is identical to <code>cimag</code>, except that it performs
  72. its calculations on <code>long double complex</code>.
  73. </p>
  74. <br>
  75. <p><strong>Returns</strong><br>
  76. The cimag* functions return the imaginary part value (as a real).
  77. </p>
  78. <br>
  79. <p><strong>Portability</strong><br>
  80. <code>cimag</code>, <code>cimagf</code> and <code>cimagl</code> are ISO C99
  81. </p>
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