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<p>Instance structure for the Q31 DCT4/IDCT4 function.  
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Data Fields</h2></td></tr>
<tr class="memitem:a46a9f136457350676e2bfd3768ff9d6d"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__dct4__instance__q31.html#a46a9f136457350676e2bfd3768ff9d6d">N</a></td></tr>
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<tr class="memitem:a32d3268ba4629908dba056599f0a904d"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__dct4__instance__q31.html#a32d3268ba4629908dba056599f0a904d">Nby2</a></td></tr>
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<tr class="memitem:ac80ff7b28fca36aeef74dea12e8312dd"><td class="memItemLeft" align="right" valign="top"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__dct4__instance__q31.html#ac80ff7b28fca36aeef74dea12e8312dd">normalize</a></td></tr>
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<tr class="memitem:a107b210eca05f0bd16246b28fd32c4e7"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__dct4__instance__q31.html#a107b210eca05f0bd16246b28fd32c4e7">pTwiddle</a></td></tr>
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<tr class="memitem:a34241ee5930de99d4f22a040d32026e3"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__dct4__instance__q31.html#a34241ee5930de99d4f22a040d32026e3">pCosFactor</a></td></tr>
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<tr class="memitem:af1487dab5e7963b85dc0fdc6bf492542"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structarm__rfft__instance__q31.html">arm_rfft_instance_q31</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__dct4__instance__q31.html#af1487dab5e7963b85dc0fdc6bf492542">pRfft</a></td></tr>
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<tr class="memitem:ac96579cfb28d08bb11dd2fe4c6303833"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structarm__cfft__radix4__instance__q31.html">arm_cfft_radix4_instance_q31</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__dct4__instance__q31.html#ac96579cfb28d08bb11dd2fe4c6303833">pCfft</a></td></tr>
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          <td class="memname">uint16_t arm_dct4_instance_q31::N</td>
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<p>length of the DCT4. </p>

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<p>half of the length of the DCT4. </p>

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          <td class="memname"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> arm_dct4_instance_q31::normalize</td>
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<p>normalizing factor. </p>

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          <td class="memname"><a class="el" href="structarm__cfft__radix4__instance__q31.html">arm_cfft_radix4_instance_q31</a>* arm_dct4_instance_q31::pCfft</td>
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<p>points to the complex FFT instance. </p>

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          <td class="memname">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>* arm_dct4_instance_q31::pCosFactor</td>
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<p>points to the cosFactor table. </p>

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          <td class="memname"><a class="el" href="structarm__rfft__instance__q31.html">arm_rfft_instance_q31</a>* arm_dct4_instance_q31::pRfft</td>
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<p>points to the real FFT instance. </p>

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          <td class="memname">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>* arm_dct4_instance_q31::pTwiddle</td>
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<p>points to the twiddle factor table. </p>

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