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<div class="title">arm_dct4_instance_q31 Struct Reference</div> </div>
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<p>Instance structure for the Q31 DCT4/IDCT4 function.
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
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Data Fields</h2></td></tr>
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<tr class="memitem:a37d49571fe35012087153c093705cd11"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__dct4__instance__q31.html#a37d49571fe35012087153c093705cd11">N</a></td></tr>
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<tr class="memitem:afa64b1618089e35c2b55cff71cb29715"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__dct4__instance__q31.html#afa64b1618089e35c2b55cff71cb29715">Nby2</a></td></tr>
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<tr class="separator:afa64b1618089e35c2b55cff71cb29715"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a3a2f571658a202a38fa508098001b47c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__dct4__instance__q31.html#a3a2f571658a202a38fa508098001b47c">normalize</a></td></tr>
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<tr class="separator:a3a2f571658a202a38fa508098001b47c"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a9760c603af5d85652496dbffd63a8a2e"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__dct4__instance__q31.html#a9760c603af5d85652496dbffd63a8a2e">pTwiddle</a></td></tr>
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<tr class="separator:a9760c603af5d85652496dbffd63a8a2e"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aa974df00a55867c29876179e57f2ac7f"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__dct4__instance__q31.html#aa974df00a55867c29876179e57f2ac7f">pCosFactor</a></td></tr>
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<tr class="separator:aa974df00a55867c29876179e57f2ac7f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a16c74f8496e1691e62da3c57e0c676eb"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structarm__rfft__instance__q31.html">arm_rfft_instance_q31</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__dct4__instance__q31.html#a16c74f8496e1691e62da3c57e0c676eb">pRfft</a></td></tr>
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<tr class="separator:a16c74f8496e1691e62da3c57e0c676eb"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a0b1f4a05c1824bab3b9bd837a260232a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structarm__cfft__radix4__instance__q31.html">arm_cfft_radix4_instance_q31</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__dct4__instance__q31.html#a0b1f4a05c1824bab3b9bd837a260232a">pCfft</a></td></tr>
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<h2 class="groupheader">Field Documentation</h2>
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<td class="memname">uint16_t N</td>
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<p>length of the DCT4. </p>
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<td class="memname">uint16_t Nby2</td>
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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__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> 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>* 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__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>* 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>* 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__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>* pTwiddle</td>
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</div><div class="memdoc">
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<p>points to the twiddle factor table. </p>
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