arm_compute v19.08
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+<div class="title">float_ops.h</div> </div>
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+<div class="contents">
+<a href="float__ops_8h.xhtml">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2019 ARM Limited.</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * SPDX-License-Identifier: MIT</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a copy</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * of this software and associated documentation files (the "Software"), to</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * deal in the Software without restriction, including without limitation the</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * sell copies of the Software, and to permit persons to whom the Software is</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * furnished to do so, subject to the following conditions:</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * The above copyright notice and this permission notice shall be included in all</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * copies or substantial portions of the Software.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> *</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * SOFTWARE.</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> */</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#ifndef __ARM_COMPUTE_UTILS_HELPERS_FLOAT_OPS_H__</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#define __ARM_COMPUTE_UTILS_HELPERS_FLOAT_OPS_H__</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">namespace </span><a class="code" href="namespacearm__compute.xhtml">arm_compute</a></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> {</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">namespace </span>helpers</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> {</div><div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="namespacearm__compute_1_1helpers_1_1float__ops.xhtml"> 31</a></span> <span class="keyword">namespace </span>float_ops</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> {</div><div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml"> 33</a></span> <span class="keyword">union </span><a class="code" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml">RawFloat</a></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> {</div><div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#aa3817c2ed0584cd3c3c818ff598bacb9"> 39</a></span>  <span class="keyword">explicit</span> <a class="code" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#aa3817c2ed0584cd3c3c818ff598bacb9">RawFloat</a>(<span class="keywordtype">float</span> val)</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  : <a class="code" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a7d886905c667c4e8e91251b6a3a98f39">f32</a>(val)</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  {</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  }</div><div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a20d424219004c098e3c7e845e391afb6"> 47</a></span>  int32_t <a class="code" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a20d424219004c098e3c7e845e391afb6">sign</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">return</span> <a class="code" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a9183041de7aec86af61a14ffe5f3758e">i32</a> >> 31;</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  }</div><div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a3fda27eb4e4896945317480496290159"> 55</a></span>  int32_t <a class="code" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a3fda27eb4e4896945317480496290159">exponent</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">return</span> (<a class="code" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a9183041de7aec86af61a14ffe5f3758e">i32</a> >> 23) & 0xFF;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  }</div><div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a2331cafeb7bdfe99da1a767ce41d550d"> 63</a></span>  int32_t <a class="code" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a2331cafeb7bdfe99da1a767ce41d550d">mantissa</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">return</span> <a class="code" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a9183041de7aec86af61a14ffe5f3758e">i32</a> & 0x007FFFFF;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div><div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a9183041de7aec86af61a14ffe5f3758e"> 68</a></span>  int32_t <a class="code" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a9183041de7aec86af61a14ffe5f3758e">i32</a>;</div><div class="line"><a name="l00069"></a><span class="lineno"><a class="line" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a7d886905c667c4e8e91251b6a3a98f39"> 69</a></span>  <span class="keywordtype">float</span> <a class="code" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a7d886905c667c4e8e91251b6a3a98f39">f32</a>;</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> };</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div><div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="namespacearm__compute_1_1helpers_1_1float__ops.xhtml#a7b4d1b716f8f3af42a267805c5eb6671"> 80</a></span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="namespacearm__compute_1_1helpers_1_1float__ops.xhtml#a7b4d1b716f8f3af42a267805c5eb6671">is_equal_ulps</a>(<span class="keywordtype">float</span> a, <span class="keywordtype">float</span> <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#aa76b4a6e74940dabc5b7fc6b2dab3545">b</a>, <span class="keywordtype">int</span> max_allowed_ulps = 0)</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> {</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <a class="code" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml">RawFloat</a> ra(a);</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <a class="code" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml">RawFloat</a> rb(<a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#aa76b4a6e74940dabc5b7fc6b2dab3545">b</a>);</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="comment">// Check ULP distance</span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> ulps = std::abs(ra.<a class="code" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a9183041de7aec86af61a14ffe5f3758e">i32</a> - rb.<a class="code" href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a9183041de7aec86af61a14ffe5f3758e">i32</a>);</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">return</span> ulps <= max_allowed_ulps;</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> }</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div><div class="line"><a name="l00097"></a><span class="lineno"><a class="line" href="namespacearm__compute_1_1helpers_1_1float__ops.xhtml#ab2dcf325d146568ecc8d4a4bd36c02ac"> 97</a></span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="namespacearm__compute_1_1helpers_1_1float__ops.xhtml#ab2dcf325d146568ecc8d4a4bd36c02ac">is_one</a>(<span class="keywordtype">float</span> a, <span class="keywordtype">float</span> <a class="code" href="_asymm_helpers_8cpp.xhtml#a552dc3787d7ea1675f3e4e8993501d58">epsilon</a> = 0.00001f)</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> {</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">return</span> std::abs(1.0f - a) <= <a class="code" href="_asymm_helpers_8cpp.xhtml#a552dc3787d7ea1675f3e4e8993501d58">epsilon</a>;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> }</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div><div class="line"><a name="l00109"></a><span class="lineno"><a class="line" href="namespacearm__compute_1_1helpers_1_1float__ops.xhtml#a3bd19352aed7410633d1f9b95d74a809"> 109</a></span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="namespacearm__compute_1_1helpers_1_1float__ops.xhtml#a3bd19352aed7410633d1f9b95d74a809">is_zero</a>(<span class="keywordtype">float</span> a, <span class="keywordtype">float</span> <a class="code" href="_asymm_helpers_8cpp.xhtml#a552dc3787d7ea1675f3e4e8993501d58">epsilon</a> = 0.00001f)</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> {</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">return</span> std::abs(0.0f - a) <= <a class="code" href="_asymm_helpers_8cpp.xhtml#a552dc3787d7ea1675f3e4e8993501d58">epsilon</a>;</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> }</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> } <span class="comment">// namespace float_ops</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> } <span class="comment">// namespace helpers</span></div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> } <span class="comment">// namespace arm_compute</span></div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="preprocessor">#endif </span><span class="comment">/* __ARM_COMPUTE_UTILS_HELPERS_FLOAT_OPS_H__ */</span><span class="preprocessor"></span></div><div class="ttc" id="namespacearm__compute_1_1helpers_1_1float__ops_xhtml_ab2dcf325d146568ecc8d4a4bd36c02ac"><div class="ttname"><a href="namespacearm__compute_1_1helpers_1_1float__ops.xhtml#ab2dcf325d146568ecc8d4a4bd36c02ac">arm_compute::helpers::float_ops::is_one</a></div><div class="ttdeci">bool is_one(float a, float epsilon=0.00001f)</div><div class="ttdoc">Checks if the input floating point number is 1.0f checking if the difference is within a range define...</div><div class="ttdef"><b>Definition:</b> <a href="float__ops_8h_source.xhtml#l00097">float_ops.h:97</a></div></div>
+<div class="ttc" id="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float_xhtml_a3fda27eb4e4896945317480496290159"><div class="ttname"><a href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a3fda27eb4e4896945317480496290159">arm_compute::helpers::float_ops::RawFloat::exponent</a></div><div class="ttdeci">int32_t exponent() const</div><div class="ttdoc">Extract exponent of floating point number.</div><div class="ttdef"><b>Definition:</b> <a href="float__ops_8h_source.xhtml#l00055">float_ops.h:55</a></div></div>
+<div class="ttc" id="namespacearm__compute_1_1test_1_1validation_xhtml_aa76b4a6e74940dabc5b7fc6b2dab3545"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation.xhtml#aa76b4a6e74940dabc5b7fc6b2dab3545">arm_compute::test::validation::b</a></div><div class="ttdeci">SimpleTensor< float > b</div><div class="ttdef"><b>Definition:</b> <a href="_c_p_p_2_d_f_t_8cpp_source.xhtml#l00157">DFT.cpp:157</a></div></div>
+<div class="ttc" id="_asymm_helpers_8cpp_xhtml_a552dc3787d7ea1675f3e4e8993501d58"><div class="ttname"><a href="_asymm_helpers_8cpp.xhtml#a552dc3787d7ea1675f3e4e8993501d58">epsilon</a></div><div class="ttdeci">constexpr float epsilon</div><div class="ttdef"><b>Definition:</b> <a href="_asymm_helpers_8cpp_source.xhtml#l00033">AsymmHelpers.cpp:33</a></div></div>
+<div class="ttc" id="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float_xhtml_a9183041de7aec86af61a14ffe5f3758e"><div class="ttname"><a href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a9183041de7aec86af61a14ffe5f3758e">arm_compute::helpers::float_ops::RawFloat::i32</a></div><div class="ttdeci">int32_t i32</div><div class="ttdef"><b>Definition:</b> <a href="float__ops_8h_source.xhtml#l00068">float_ops.h:68</a></div></div>
+<div class="ttc" id="namespacearm__compute_1_1helpers_1_1float__ops_xhtml_a7b4d1b716f8f3af42a267805c5eb6671"><div class="ttname"><a href="namespacearm__compute_1_1helpers_1_1float__ops.xhtml#a7b4d1b716f8f3af42a267805c5eb6671">arm_compute::helpers::float_ops::is_equal_ulps</a></div><div class="ttdeci">bool is_equal_ulps(float a, float b, int max_allowed_ulps=0)</div><div class="ttdoc">Checks if two floating point numbers are equal given an allowed number of ULPs.</div><div class="ttdef"><b>Definition:</b> <a href="float__ops_8h_source.xhtml#l00080">float_ops.h:80</a></div></div>
+<div class="ttc" id="namespacearm__compute_xhtml"><div class="ttname"><a href="namespacearm__compute.xhtml">arm_compute</a></div><div class="ttdoc">Copyright (c) 2017-2018 ARM Limited.</div><div class="ttdef"><b>Definition:</b> <a href="00__introduction_8dox_source.xhtml#l00024">00_introduction.dox:24</a></div></div>
+<div class="ttc" id="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float_xhtml_aa3817c2ed0584cd3c3c818ff598bacb9"><div class="ttname"><a href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#aa3817c2ed0584cd3c3c818ff598bacb9">arm_compute::helpers::float_ops::RawFloat::RawFloat</a></div><div class="ttdeci">RawFloat(float val)</div><div class="ttdoc">Constructor.</div><div class="ttdef"><b>Definition:</b> <a href="float__ops_8h_source.xhtml#l00039">float_ops.h:39</a></div></div>
+<div class="ttc" id="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float_xhtml_a2331cafeb7bdfe99da1a767ce41d550d"><div class="ttname"><a href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a2331cafeb7bdfe99da1a767ce41d550d">arm_compute::helpers::float_ops::RawFloat::mantissa</a></div><div class="ttdeci">int32_t mantissa() const</div><div class="ttdoc">Extract mantissa of floating point number.</div><div class="ttdef"><b>Definition:</b> <a href="float__ops_8h_source.xhtml#l00063">float_ops.h:63</a></div></div>
+<div class="ttc" id="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float_xhtml_a7d886905c667c4e8e91251b6a3a98f39"><div class="ttname"><a href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a7d886905c667c4e8e91251b6a3a98f39">arm_compute::helpers::float_ops::RawFloat::f32</a></div><div class="ttdeci">float f32</div><div class="ttdef"><b>Definition:</b> <a href="float__ops_8h_source.xhtml#l00069">float_ops.h:69</a></div></div>
+<div class="ttc" id="namespacearm__compute_1_1helpers_1_1float__ops_xhtml_a3bd19352aed7410633d1f9b95d74a809"><div class="ttname"><a href="namespacearm__compute_1_1helpers_1_1float__ops.xhtml#a3bd19352aed7410633d1f9b95d74a809">arm_compute::helpers::float_ops::is_zero</a></div><div class="ttdeci">bool is_zero(float a, float epsilon=0.00001f)</div><div class="ttdoc">Checks if the input floating point number is 0.0f checking if the difference is within a range define...</div><div class="ttdef"><b>Definition:</b> <a href="float__ops_8h_source.xhtml#l00109">float_ops.h:109</a></div></div>
+<div class="ttc" id="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float_xhtml_a20d424219004c098e3c7e845e391afb6"><div class="ttname"><a href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml#a20d424219004c098e3c7e845e391afb6">arm_compute::helpers::float_ops::RawFloat::sign</a></div><div class="ttdeci">int32_t sign() const</div><div class="ttdoc">Extract sign of floating point number.</div><div class="ttdef"><b>Definition:</b> <a href="float__ops_8h_source.xhtml#l00047">float_ops.h:47</a></div></div>
+<div class="ttc" id="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float_xhtml"><div class="ttname"><a href="unionarm__compute_1_1helpers_1_1float__ops_1_1_raw_float.xhtml">arm_compute::helpers::float_ops::RawFloat</a></div><div class="ttdef"><b>Definition:</b> <a href="float__ops_8h_source.xhtml#l00033">float_ops.h:33</a></div></div>
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