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  45 <h1>Linear Interpolate Example<br/>
  46 <small>
  47 [<a class="el" href="group__group_examples.html">Examples</a>]</small>
  48 </h1>  </div>
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  53 <p><b> CMSIS DSP Software Library -- Linear Interpolate Example </b></p>
  54 <p><b> Description </b> This example demonstrates usage of linear interpolate modules and fast math modules. Method 1 uses fast math sine function to calculate sine values using cubic interpolation and method 2 uses linear interpolation function and results are compared to reference output. Example shows linear interpolation function can be used to get higher precision compared to fast math sin calculation.</p>
  55 <dl class="user"><dt><b>Block Diagram:</b></dt><dd></dd></dl>
  56 <dl class="user"><dt><b></b></dt><dd><div align="center">
  57 <img src="linearInterpExampleMethod1.gif" alt="linearInterpExampleMethod1.gif"/>
  58 <p><strong>Method 1: Sine caluclation using fast math</strong></p></div>
  59  </dd></dl>
  60 <dl class="user"><dt><b></b></dt><dd><div align="center">
  61 <img src="linearInterpExampleMethod2.gif" alt="linearInterpExampleMethod2.gif"/>
  62 <p><strong>Method 2: Sine caluclation using interpolation function</strong></p></div>
  63  </dd></dl>
  64 <dl class="user"><dt><b>Variables Description:</b></dt><dd></dd></dl>
  65 <dl class="user"><dt><b></b></dt><dd><ul>
  66 <li><code>testInputSin_f32</code> points to the input values for sine calculation </li>
  67 <li><code>testRefSinOutput32_f32</code> points to the reference values caculated from sin() matlab function </li>
  68 <li><code>testOutput</code> points to output buffer calculation from cubic interpolation </li>
  69 <li><code>testLinIntOutput</code> points to output buffer calculation from linear interpolation </li>
  70 <li><code>snr1</code> Signal to noise ratio for reference and cubic interpolation output </li>
  71 <li><code>snr2</code> Signal to noise ratio for reference and linear interpolation output</li>
  72 </ul>
  73 </dd></dl>
  74 <dl class="user"><dt><b>CMSIS DSP Software Library Functions Used:</b></dt><dd></dd></dl>
  75 <dl class="user"><dt><b></b></dt><dd><ul>
  76 <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>
  77 <li><a class="el" href="group___linear_interpolate.html#ga2269263d810cafcd19681957b37d5cf6" title="Process function for the floating-point Linear Interpolation Function.">arm_linear_interp_f32()</a></li>
  78 </ul>
  79 </dd></dl>
  80 <p><b> Refer </b> <a class="el" href="arm_linear_interp_example_f32_8c-example.html">arm_linear_interp_example_f32.c</a> </p>
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