group___sin_cos_example.html 8.4 KB

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  109. <div class="title">SineCosine Example</div> </div>
  110. <div class="ingroups"><a class="el" href="group__group_examples.html">Examples</a></div></div><!--header-->
  111. <div class="contents">
  112. <dl class="section user"><dt>Description:</dt><dd></dd></dl>
  113. <dl class="section user"><dt></dt><dd>Demonstrates the Pythagorean trignometric identity with the use of Cosine, Sine, Vector Multiplication, and Vector Addition functions.</dd></dl>
  114. <dl class="section user"><dt>Algorithm:</dt><dd></dd></dl>
  115. <dl class="section user"><dt></dt><dd>Mathematically, the Pythagorean trignometric identity is defined by the following equation: <pre>sin(x) * sin(x) + cos(x) * cos(x) = 1</pre> where <code>x</code> is the angle in radians.</dd></dl>
  116. <dl class="section user"><dt>Block Diagram:</dt><dd></dd></dl>
  117. <dl class="section user"><dt></dt><dd><div class="image">
  118. <img src="sinCos.gif" alt="sinCos.gif"/>
  119. </div>
  120. </dd></dl>
  121. <dl class="section user"><dt>Variables Description:</dt><dd></dd></dl>
  122. <dl class="section user"><dt></dt><dd><ul>
  123. <li><code>testInput_f32</code> array of input angle in radians </li>
  124. <li><code>testOutput</code> stores sum of the squares of sine and cosine values of input angle</li>
  125. </ul>
  126. </dd></dl>
  127. <dl class="section user"><dt>CMSIS DSP Software Library Functions Used:</dt><dd></dd></dl>
  128. <dl class="section user"><dt></dt><dd><ul>
  129. <li><a class="el" href="group__cos.html#gace15287f9c64b9b4084d1c797d4c49d8" title="Fast approximation to the trigonometric cosine function for floating-point data.">arm_cos_f32()</a></li>
  130. <li><a class="el" href="group__sin.html#gae164899c4a3fc0e946dc5d55555fe541" title="Fast approximation to the trigonometric sine function for floating-point data.">arm_sin_f32()</a></li>
  131. <li><a class="el" href="group___basic_mult.html#gaca3f0b8227da431ab29225b88888aa32" title="Floating-point vector multiplication.">arm_mult_f32()</a></li>
  132. <li><a class="el" href="group___basic_add.html#ga6a904a547413b10565dd1d251c6bafbd" title="Floating-point vector addition.">arm_add_f32()</a></li>
  133. </ul>
  134. </dd></dl>
  135. <p><b> Refer </b> <a class="el" href="arm_sin_cos_example_f32_8c-example.html">arm_sin_cos_example_f32.c</a> </p>
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