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<div class="title">cxvec_math.h File Reference<div class="ingroups"><a class="el" href="group__cxvec.html">Complex vectors</a> » <a class="el" href="group__cxvec__math.html">Complex vectors math and signal processing</a></div></div> </div>
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<p>Osmocom Complex vectors math header.
<a href="#details">More...</a></p>
<p><a href="cxvec__math_8h_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="enum-members"></a>
Enumerations</h2></td></tr>
<tr class="memitem:ga2e183a0f24afa2e16199d1514629bf08"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cxvec__math.html#ga2e183a0f24afa2e16199d1514629bf08">osmo_cxvec_conv_type</a> { <a class="el" href="group__cxvec__math.html#gga2e183a0f24afa2e16199d1514629bf08ae758172bda42f9b44aa9015c0e142717">CONV_FULL_SPAN</a>,
<a class="el" href="group__cxvec__math.html#gga2e183a0f24afa2e16199d1514629bf08a47fb2e6e9d274d4512601828023ac1d2">CONV_OVERLAP_ONLY</a>,
<a class="el" href="group__cxvec__math.html#gga2e183a0f24afa2e16199d1514629bf08a03ece74c3bcd50aeb9fb42329b9a59a5">CONV_NO_DELAY</a>
}</td></tr>
<tr class="memdesc:ga2e183a0f24afa2e16199d1514629bf08"><td class="mdescLeft"> </td><td class="mdescRight">Various possible types of convolution span. <a href="group__cxvec__math.html#ga2e183a0f24afa2e16199d1514629bf08">More...</a><br /></td></tr>
<tr class="separator:ga2e183a0f24afa2e16199d1514629bf08"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga7942b58b341e440c0e8796d395460b78"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cxvec__math.html#ga7942b58b341e440c0e8796d395460b78">osmo_cxvec_peak_alg</a> { <a class="el" href="group__cxvec__math.html#gga7942b58b341e440c0e8796d395460b78abb4b91d1bfa5bd51ff0e48633d9b9891">PEAK_WEIGH_WIN</a>,
<a class="el" href="group__cxvec__math.html#gga7942b58b341e440c0e8796d395460b78ab0fb6b29112253cc5d51fb119b5d812a">PEAK_WEIGH_WIN_CENTER</a>,
<a class="el" href="group__cxvec__math.html#gga7942b58b341e440c0e8796d395460b78aa8df843abc147bca5860fee1ddff1378">PEAK_EARLY_LATE</a>
}</td></tr>
<tr class="memdesc:ga7942b58b341e440c0e8796d395460b78"><td class="mdescLeft"> </td><td class="mdescRight">Various possible peak finding algorithms. <a href="group__cxvec__math.html#ga7942b58b341e440c0e8796d395460b78">More...</a><br /></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ga4e7a7183dc4e5ce77d72d2986495f348"><td class="memItemLeft" align="right" valign="top">static float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cxvec__math.html#ga4e7a7183dc4e5ce77d72d2986495f348">osmo_sinc</a> (float x)</td></tr>
<tr class="memdesc:ga4e7a7183dc4e5ce77d72d2986495f348"><td class="mdescLeft"> </td><td class="mdescRight">Unnormalized sinc function. <a href="group__cxvec__math.html#ga4e7a7183dc4e5ce77d72d2986495f348">More...</a><br /></td></tr>
<tr class="separator:ga4e7a7183dc4e5ce77d72d2986495f348"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga1b169ec31cb01111c0def0c12d65f3a2"><td class="memItemLeft" align="right" valign="top">static float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cxvec__math.html#ga1b169ec31cb01111c0def0c12d65f3a2">osmo_normsqf</a> (float complex c)</td></tr>
<tr class="memdesc:ga1b169ec31cb01111c0def0c12d65f3a2"><td class="mdescLeft"> </td><td class="mdescRight">Squared norm of a given complex. <a href="group__cxvec__math.html#ga1b169ec31cb01111c0def0c12d65f3a2">More...</a><br /></td></tr>
<tr class="separator:ga1b169ec31cb01111c0def0c12d65f3a2"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga5ac0adb49726087258381582582ef654"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cxvec__math.html#ga5ac0adb49726087258381582582ef654">osmo_cxvec_scale</a> (const struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> *in, float complex scale, struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> *out)</td></tr>
<tr class="memdesc:ga5ac0adb49726087258381582582ef654"><td class="mdescLeft"> </td><td class="mdescRight">Scale a complex vector (multiply by a constant) <a href="group__cxvec__math.html#ga5ac0adb49726087258381582582ef654">More...</a><br /></td></tr>
<tr class="separator:ga5ac0adb49726087258381582582ef654"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga49125f3c259da9d7eec7fa4d98d609d4"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cxvec__math.html#ga49125f3c259da9d7eec7fa4d98d609d4">osmo_cxvec_rotate</a> (const struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> *in, float rps, struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> *out)</td></tr>
<tr class="memdesc:ga49125f3c259da9d7eec7fa4d98d609d4"><td class="mdescLeft"> </td><td class="mdescRight">Rotate a complex vector (frequency shift) <a href="group__cxvec__math.html#ga49125f3c259da9d7eec7fa4d98d609d4">More...</a><br /></td></tr>
<tr class="separator:ga49125f3c259da9d7eec7fa4d98d609d4"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga9fa20d926f9d313a4751cef1eff740ba"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cxvec__math.html#ga9fa20d926f9d313a4751cef1eff740ba">osmo_cxvec_delay</a> (const struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> *in, float delay, struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> *out)</td></tr>
<tr class="memdesc:ga9fa20d926f9d313a4751cef1eff740ba"><td class="mdescLeft"> </td><td class="mdescRight">Fractionally delay a vector while maintaining its length. <a href="group__cxvec__math.html#ga9fa20d926f9d313a4751cef1eff740ba">More...</a><br /></td></tr>
<tr class="separator:ga9fa20d926f9d313a4751cef1eff740ba"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga2ebadb16e25768896013420a98ec666f"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cxvec__math.html#ga2ebadb16e25768896013420a98ec666f">osmo_cxvec_convolve</a> (const struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> *f, const struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> *g, enum <a class="el" href="group__cxvec__math.html#ga2e183a0f24afa2e16199d1514629bf08">osmo_cxvec_conv_type</a> type, struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> *out)</td></tr>
<tr class="memdesc:ga2ebadb16e25768896013420a98ec666f"><td class="mdescLeft"> </td><td class="mdescRight">Convolve two complex vectors. <a href="group__cxvec__math.html#ga2ebadb16e25768896013420a98ec666f">More...</a><br /></td></tr>
<tr class="separator:ga2ebadb16e25768896013420a98ec666f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga99ff6e3baec3253f4e431b156f042a0f"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cxvec__math.html#ga99ff6e3baec3253f4e431b156f042a0f">osmo_cxvec_correlate</a> (const struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> *f, const struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> *g, int g_corr_step, struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> *out)</td></tr>
<tr class="memdesc:ga99ff6e3baec3253f4e431b156f042a0f"><td class="mdescLeft"> </td><td class="mdescRight">Cross-correlate two complex vectors. <a href="group__cxvec__math.html#ga99ff6e3baec3253f4e431b156f042a0f">More...</a><br /></td></tr>
<tr class="separator:ga99ff6e3baec3253f4e431b156f042a0f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gacb1c646e03a09b51b617467501639763"><td class="memItemLeft" align="right" valign="top">float complex </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cxvec__math.html#gacb1c646e03a09b51b617467501639763">osmo_cxvec_interpolate_point</a> (const struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> *cv, float pos)</td></tr>
<tr class="memdesc:gacb1c646e03a09b51b617467501639763"><td class="mdescLeft"> </td><td class="mdescRight">Interpolate any fractional position in a vector using sinc filtering. <a href="group__cxvec__math.html#gacb1c646e03a09b51b617467501639763">More...</a><br /></td></tr>
<tr class="separator:gacb1c646e03a09b51b617467501639763"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga495219ee953336e15cd68c9b22d3850c"><td class="memItemLeft" align="right" valign="top">float </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cxvec__math.html#ga495219ee953336e15cd68c9b22d3850c">osmo_cxvec_peak_energy_find</a> (const struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> *cv, int win_size, enum <a class="el" href="group__cxvec__math.html#ga7942b58b341e440c0e8796d395460b78">osmo_cxvec_peak_alg</a> alg, float complex *peak_val_p)</td></tr>
<tr class="memdesc:ga495219ee953336e15cd68c9b22d3850c"><td class="mdescLeft"> </td><td class="mdescRight">Find the maximum energy ( <img class="formulaInl" alt="$|x|^2$" src="form_6.png"/>) peak in a sequence. <a href="group__cxvec__math.html#ga495219ee953336e15cd68c9b22d3850c">More...</a><br /></td></tr>
<tr class="separator:ga495219ee953336e15cd68c9b22d3850c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga4579583a658fc33afd24a1d8508b212f"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cxvec__math.html#ga4579583a658fc33afd24a1d8508b212f">osmo_cxvec_sig_normalize</a> (const struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> *sig, int decim, float freq_shift, struct <a class="el" href="structosmo__cxvec.html">osmo_cxvec</a> *out)</td></tr>
<tr class="memdesc:ga4579583a658fc33afd24a1d8508b212f"><td class="mdescLeft"> </td><td class="mdescRight">'Normalize' an IQ signal and apply decimation/frequency shift <a href="group__cxvec__math.html#ga4579583a658fc33afd24a1d8508b212f">More...</a><br /></td></tr>
<tr class="separator:ga4579583a658fc33afd24a1d8508b212f"><td class="memSeparator" colspan="2"> </td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Osmocom Complex vectors math header. </p>
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