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399 lines
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<a href="#func-members">Functions</a> </div>
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<div class="headertitle"><div class="title">Convert 32-bit floating point value<div class="ingroups"><a class="el" href="group__groupSupport.html">Support Functions</a></div></div></div>
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<div class="contents">
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:ga5e0636b1fa9640c3e192108e0c747830"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__float__to__x.html#ga5e0636b1fa9640c3e192108e0c747830">arm_float_to_f16</a> (const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, float16_t *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<tr class="memdesc:ga5e0636b1fa9640c3e192108e0c747830"><td class="mdescLeft"> </td><td class="mdescRight">Converts the elements of the floating-point vector to f16 vector. <a href="group__float__to__x.html#ga5e0636b1fa9640c3e192108e0c747830">More...</a><br /></td></tr>
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<tr class="separator:ga5e0636b1fa9640c3e192108e0c747830"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gab44eb2fa9c8aa1051bd669e7b824f74f"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__float__to__x.html#gab44eb2fa9c8aa1051bd669e7b824f74f">arm_float_to_f64</a> (const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, <a class="el" href="arm__math__types_8h.html#ac55f3ae81b5bc9053760baacf57e47f4">float64_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<tr class="memdesc:gab44eb2fa9c8aa1051bd669e7b824f74f"><td class="mdescLeft"> </td><td class="mdescRight">Converts the elements of the floating-point vector to f64 vector. <a href="group__float__to__x.html#gab44eb2fa9c8aa1051bd669e7b824f74f">More...</a><br /></td></tr>
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<tr class="separator:gab44eb2fa9c8aa1051bd669e7b824f74f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gac7696e64963e5051ebb950c88c6ba186"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__float__to__x.html#gac7696e64963e5051ebb950c88c6ba186">arm_float_to_q15</a> (const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, <a class="el" href="arm__math__types_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<tr class="memdesc:gac7696e64963e5051ebb950c88c6ba186"><td class="mdescLeft"> </td><td class="mdescRight">Converts the elements of the floating-point vector to Q15 vector. <a href="group__float__to__x.html#gac7696e64963e5051ebb950c88c6ba186">More...</a><br /></td></tr>
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<tr class="separator:gac7696e64963e5051ebb950c88c6ba186"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gaae21be47db707e79552f3e8221a48fb0"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__float__to__x.html#gaae21be47db707e79552f3e8221a48fb0">arm_float_to_q31</a> (const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<tr class="memdesc:gaae21be47db707e79552f3e8221a48fb0"><td class="mdescLeft"> </td><td class="mdescRight">Converts the elements of the floating-point vector to Q31 vector. <a href="group__float__to__x.html#gaae21be47db707e79552f3e8221a48fb0">More...</a><br /></td></tr>
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<tr class="separator:gaae21be47db707e79552f3e8221a48fb0"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga63b7cef42a242f0be43376ba3380988d"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__float__to__x.html#ga63b7cef42a242f0be43376ba3380988d">arm_float_to_q7</a> (const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, <a class="el" href="arm__math__types_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
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<tr class="memdesc:ga63b7cef42a242f0be43376ba3380988d"><td class="mdescLeft"> </td><td class="mdescRight">Converts the elements of the floating-point vector to Q7 vector. <a href="group__float__to__x.html#ga63b7cef42a242f0be43376ba3380988d">More...</a><br /></td></tr>
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<tr class="separator:ga63b7cef42a242f0be43376ba3380988d"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Description</h2>
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<h2 class="groupheader">Function Documentation</h2>
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<a id="ga5e0636b1fa9640c3e192108e0c747830" name="ga5e0636b1fa9640c3e192108e0c747830"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga5e0636b1fa9640c3e192108e0c747830">◆ </a></span>arm_float_to_f16()</h2>
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<div class="memitem">
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<table class="memname">
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<tr>
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<td class="memname">void arm_float_to_f16 </td>
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<td>(</td>
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<td class="paramtype">const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td>
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<td class="paramname"><em>pSrc</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">float16_t * </td>
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<td class="paramname"><em>pDst</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>blockSize</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</div><div class="memdoc">
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<p >Converts the elements of the floating-point vector to Q31 vector.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir">[in]</td><td class="paramname">pSrc</td><td>points to the f32 input vector </td></tr>
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<tr><td class="paramdir">[out]</td><td class="paramname">pDst</td><td>points to the f16 output vector </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>number of samples in each vector </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
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</div>
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</div>
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<a id="gab44eb2fa9c8aa1051bd669e7b824f74f" name="gab44eb2fa9c8aa1051bd669e7b824f74f"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#gab44eb2fa9c8aa1051bd669e7b824f74f">◆ </a></span>arm_float_to_f64()</h2>
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<td class="memname">void arm_float_to_f64 </td>
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<td>(</td>
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<td class="paramtype">const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td>
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<td class="paramname"><em>pSrc</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="el" href="arm__math__types_8h.html#ac55f3ae81b5bc9053760baacf57e47f4">float64_t</a> * </td>
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<td class="paramname"><em>pDst</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>blockSize</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p >Converts the elements of the floating-point vector to 64 bit floating-point vector.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir">[in]</td><td class="paramname">pSrc</td><td>points to the f32 input vector </td></tr>
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<tr><td class="paramdir">[out]</td><td class="paramname">pDst</td><td>points to the f64 output vector </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>number of samples in each vector </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
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</div>
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</div>
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<a id="gac7696e64963e5051ebb950c88c6ba186" name="gac7696e64963e5051ebb950c88c6ba186"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#gac7696e64963e5051ebb950c88c6ba186">◆ </a></span>arm_float_to_q15()</h2>
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<td class="memname">void arm_float_to_q15 </td>
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<td>(</td>
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<td class="paramtype">const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td>
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<td class="paramname"><em>pSrc</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="el" href="arm__math__types_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> * </td>
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<td class="paramname"><em>pDst</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>blockSize</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</table>
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</div><div class="memdoc">
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir">[in]</td><td class="paramname">pSrc</td><td>points to the floating-point input vector </td></tr>
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<tr><td class="paramdir">[out]</td><td class="paramname">pDst</td><td>points to the Q15 output vector </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>number of samples in each vector </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none</dd></dl>
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<dl class="section user"><dt>Details</dt><dd>The equation used for the conversion process is: <pre>
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pDst[n] = (q15_t)(pSrc[n] * 32768); 0 <= n < blockSize.
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</pre></dd></dl>
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<dl class="section user"><dt>Scaling and Overflow Behavior</dt><dd>The function uses saturating arithmetic. Results outside of the allowable Q15 range [0x8000 0x7FFF] are saturated.</dd></dl>
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<dl class="section note"><dt>Note</dt><dd>In order to apply rounding, the library should be rebuilt with the ROUNDING macro defined in the preprocessor section of project options. </dd></dl>
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<a id="gaae21be47db707e79552f3e8221a48fb0" name="gaae21be47db707e79552f3e8221a48fb0"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#gaae21be47db707e79552f3e8221a48fb0">◆ </a></span>arm_float_to_q31()</h2>
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<td class="memname">void arm_float_to_q31 </td>
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<td>(</td>
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<td class="paramtype">const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td>
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<td class="paramname"><em>pSrc</em>, </td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td>
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<td class="paramname"><em>pDst</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>blockSize</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</div><div class="memdoc">
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir">[in]</td><td class="paramname">pSrc</td><td>points to the floating-point input vector </td></tr>
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<tr><td class="paramdir">[out]</td><td class="paramname">pDst</td><td>points to the Q31 output vector </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>number of samples in each vector </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none</dd></dl>
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<dl class="section user"><dt>Details</dt><dd>The equation used for the conversion process is: <pre>
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pDst[n] = (q31_t)(pSrc[n] * 2147483648); 0 <= n < blockSize.
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</pre></dd></dl>
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<dl class="section user"><dt>Scaling and Overflow Behavior</dt><dd>The function uses saturating arithmetic. Results outside of the allowable Q31 range[0x80000000 0x7FFFFFFF] are saturated.</dd></dl>
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<dl class="section note"><dt>Note</dt><dd>In order to apply rounding, the library should be rebuilt with the ROUNDING macro defined in the preprocessor section of project options. </dd></dl>
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<a id="ga63b7cef42a242f0be43376ba3380988d" name="ga63b7cef42a242f0be43376ba3380988d"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga63b7cef42a242f0be43376ba3380988d">◆ </a></span>arm_float_to_q7()</h2>
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<td class="memname">void arm_float_to_q7 </td>
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<td>(</td>
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<td class="paramtype">const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td>
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<td class="paramname"><em>pSrc</em>, </td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="el" href="arm__math__types_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> * </td>
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<td class="paramname"><em>pDst</em>, </td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>blockSize</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir">[in]</td><td class="paramname">*pSrc</td><td>points to the floating-point input vector </td></tr>
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<tr><td class="paramdir">[out]</td><td class="paramname">*pDst</td><td>points to the Q7 output vector </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>length of the input vector </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none.</dd></dl>
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<dl class="section user"><dt>Description:</dt><dd></dd></dl>
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<dl class="section user"><dt></dt><dd>The equation used for the conversion process is: <pre>
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pDst[n] = (q7_t)(pSrc[n] * 128); 0 <= n < blockSize.
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</pre> </dd></dl>
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<dl class="section user"><dt>Scaling and Overflow Behavior:</dt><dd></dd></dl>
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<dl class="section user"><dt></dt><dd>The function uses saturating arithmetic. Results outside of the allowable Q7 range [0x80 0x7F] will be saturated. </dd></dl>
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<dl class="section note"><dt>Note</dt><dd>In order to apply rounding, the library should be rebuilt with the ROUNDING macro defined in the preprocessor section of project options. </dd></dl>
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