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<div class="section" id="class-cppfunction">
<span id="exhale-class-classtorch-1-1-cpp-function"></span><h1>Class CppFunction<a class="headerlink" href="#class-cppfunction" title="Permalink to this heading">¶</a></h1>
<ul class="simple">
<li><p>Defined in <a class="reference internal" href="file_torch_library.h.html#file-torch-library-h"><span class="std std-ref">File library.h</span></a></p></li>
</ul>
<div class="contents local topic" id="page-contents">
<p class="topic-title">Page Contents</p>
<ul class="simple">
<li><p><a class="reference internal" href="#class-documentation" id="id1">Class Documentation</a></p></li>
</ul>
</div>
<div class="section" id="class-documentation">
<h2>Class Documentation<a class="headerlink" href="#class-documentation" title="Permalink to this heading">¶</a></h2>
<dl class="cpp class">
<dt class="sig sig-object cpp" id="_CPPv4N5torch11CppFunctionE">
<span id="_CPPv3N5torch11CppFunctionE"></span><span id="_CPPv2N5torch11CppFunctionE"></span><span id="torch::CppFunction"></span><span class="target" id="classtorch_1_1_cpp_function"></span><span class="k"><span class="pre">class</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">CppFunction</span></span></span><a class="headerlink" href="#_CPPv4N5torch11CppFunctionE" title="Permalink to this definition">¶</a><br /></dt>
<dd><p>Represents a C++ function that implements an operator. </p>
<p>Most users won’t interact directly with this class, except via error messages: the constructors this function define the set of permissible “function”-like things you can bind via the interface.</p>
<p>This class erases the type of the passed in function, but durably records the type via an inferred schema for the function. </p>
<div class="breathe-sectiondef docutils container">
<p class="breathe-sectiondef-title rubric" id="breathe-section-title-public-functions">Public Functions</p>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv4I0EN5torch11CppFunction11CppFunctionEP4FuncNSt11enable_if_tIN3c104guts16is_function_typeI4FuncE5valueENSt9nullptr_tEEE">
<span id="_CPPv3I0EN5torch11CppFunction11CppFunctionEP4FuncNSt11enable_if_tIN3c104guts16is_function_typeI4FuncE5valueENSt9nullptr_tEEE"></span><span id="_CPPv2I0EN5torch11CppFunction11CppFunctionEP4FuncNSt11enable_if_tIN3c104guts16is_function_typeI4FuncE5valueENSt9nullptr_tEEE"></span><span class="k"><span class="pre">template</span></span><span class="p"><span class="pre"><</span></span><span class="k"><span class="pre">typename</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">Func</span></span></span><span class="p"><span class="pre">></span></span><br /><span class="target" id="classtorch_1_1_cpp_function_1a2d8fc800e4cbe1634abfe61a464ed748"></span><span class="k"><span class="pre">inline</span></span><span class="w"> </span><span class="k"><span class="pre">explicit</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">CppFunction</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="#_CPPv4I0EN5torch11CppFunction11CppFunctionEP4FuncNSt11enable_if_tIN3c104guts16is_function_typeI4FuncE5valueENSt9nullptr_tEEE" title="torch::CppFunction::CppFunction::Func"><span class="n"><span class="pre">Func</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">f</span></span>, <span class="n"><span class="pre">std</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">enable_if_t</span></span><span class="p"><span class="pre"><</span></span><span class="n"><span class="pre">c10</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">guts</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">is_function_type</span></span><span class="p"><span class="pre"><</span></span><a class="reference internal" href="#_CPPv4I0EN5torch11CppFunction11CppFunctionEP4FuncNSt11enable_if_tIN3c104guts16is_function_typeI4FuncE5valueENSt9nullptr_tEEE" title="torch::CppFunction::CppFunction::Func"><span class="n"><span class="pre">Func</span></span></a><span class="p"><span class="pre">></span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">value</span></span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="n"><span class="pre">std</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">nullptr_t</span></span><span class="p"><span class="pre">></span></span><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="k"><span class="pre">nullptr</span></span><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4I0EN5torch11CppFunction11CppFunctionEP4FuncNSt11enable_if_tIN3c104guts16is_function_typeI4FuncE5valueENSt9nullptr_tEEE" title="Permalink to this definition">¶</a><br /></dt>
<dd><p>This overload accepts function pointers, e.g., <code class="docutils literal notranslate"><span class="pre">CppFunction(&add_impl)</span></code> </p>
</dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv4I0EN5torch11CppFunction11CppFunctionE7FuncPtrNSt11enable_if_tIN3c1032is_compile_time_function_pointerI7FuncPtrE5valueENSt9nullptr_tEEE">
<span id="_CPPv3I0EN5torch11CppFunction11CppFunctionE7FuncPtrNSt11enable_if_tIN3c1032is_compile_time_function_pointerI7FuncPtrE5valueENSt9nullptr_tEEE"></span><span id="_CPPv2I0EN5torch11CppFunction11CppFunctionE7FuncPtrNSt11enable_if_tIN3c1032is_compile_time_function_pointerI7FuncPtrE5valueENSt9nullptr_tEEE"></span><span class="k"><span class="pre">template</span></span><span class="p"><span class="pre"><</span></span><span class="k"><span class="pre">typename</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">FuncPtr</span></span></span><span class="p"><span class="pre">></span></span><br /><span class="target" id="classtorch_1_1_cpp_function_1a2e4b990ec1d900a80e5b5558593d9f74"></span><span class="k"><span class="pre">inline</span></span><span class="w"> </span><span class="k"><span class="pre">explicit</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">CppFunction</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="#_CPPv4I0EN5torch11CppFunction11CppFunctionE7FuncPtrNSt11enable_if_tIN3c1032is_compile_time_function_pointerI7FuncPtrE5valueENSt9nullptr_tEEE" title="torch::CppFunction::CppFunction::FuncPtr"><span class="n"><span class="pre">FuncPtr</span></span></a><span class="w"> </span><span class="n sig-param"><span class="pre">f</span></span>, <span class="n"><span class="pre">std</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">enable_if_t</span></span><span class="p"><span class="pre"><</span></span><span class="n"><span class="pre">c10</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">is_compile_time_function_pointer</span></span><span class="p"><span class="pre"><</span></span><a class="reference internal" href="#_CPPv4I0EN5torch11CppFunction11CppFunctionE7FuncPtrNSt11enable_if_tIN3c1032is_compile_time_function_pointerI7FuncPtrE5valueENSt9nullptr_tEEE" title="torch::CppFunction::CppFunction::FuncPtr"><span class="n"><span class="pre">FuncPtr</span></span></a><span class="p"><span class="pre">></span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">value</span></span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="n"><span class="pre">std</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">nullptr_t</span></span><span class="p"><span class="pre">></span></span><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="k"><span class="pre">nullptr</span></span><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4I0EN5torch11CppFunction11CppFunctionE7FuncPtrNSt11enable_if_tIN3c1032is_compile_time_function_pointerI7FuncPtrE5valueENSt9nullptr_tEEE" title="Permalink to this definition">¶</a><br /></dt>
<dd><p>This overload accepts compile time function pointers, e.g., <code class="docutils literal notranslate"><span class="pre">CppFunction(TORCH_FN(add_impl))</span></code> </p>
</dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv4I0EN5torch11CppFunction11CppFunctionERR6LambdaNSt11enable_if_tIN3c104guts10is_functorINSt7decay_tI6LambdaEEE5valueENSt9nullptr_tEEE">
<span id="_CPPv3I0EN5torch11CppFunction11CppFunctionERR6LambdaNSt11enable_if_tIN3c104guts10is_functorINSt7decay_tI6LambdaEEE5valueENSt9nullptr_tEEE"></span><span id="_CPPv2I0EN5torch11CppFunction11CppFunctionERR6LambdaNSt11enable_if_tIN3c104guts10is_functorINSt7decay_tI6LambdaEEE5valueENSt9nullptr_tEEE"></span><span class="k"><span class="pre">template</span></span><span class="p"><span class="pre"><</span></span><span class="k"><span class="pre">typename</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">Lambda</span></span></span><span class="p"><span class="pre">></span></span><br /><span class="target" id="classtorch_1_1_cpp_function_1a93095d8f4285805a6984476ef5ccae56"></span><span class="k"><span class="pre">inline</span></span><span class="w"> </span><span class="k"><span class="pre">explicit</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">CppFunction</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="#_CPPv4I0EN5torch11CppFunction11CppFunctionERR6LambdaNSt11enable_if_tIN3c104guts10is_functorINSt7decay_tI6LambdaEEE5valueENSt9nullptr_tEEE" title="torch::CppFunction::CppFunction::Lambda"><span class="n"><span class="pre">Lambda</span></span></a><span class="w"> </span><span class="p"><span class="pre">&</span></span><span class="p"><span class="pre">&</span></span><span class="n sig-param"><span class="pre">f</span></span>, <span class="n"><span class="pre">std</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">enable_if_t</span></span><span class="p"><span class="pre"><</span></span><span class="n"><span class="pre">c10</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">guts</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">is_functor</span></span><span class="p"><span class="pre"><</span></span><span class="n"><span class="pre">std</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">decay_t</span></span><span class="p"><span class="pre"><</span></span><a class="reference internal" href="#_CPPv4I0EN5torch11CppFunction11CppFunctionERR6LambdaNSt11enable_if_tIN3c104guts10is_functorINSt7decay_tI6LambdaEEE5valueENSt9nullptr_tEEE" title="torch::CppFunction::CppFunction::Lambda"><span class="n"><span class="pre">Lambda</span></span></a><span class="p"><span class="pre">></span></span><span class="p"><span class="pre">></span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">value</span></span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="n"><span class="pre">std</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">nullptr_t</span></span><span class="p"><span class="pre">></span></span><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="k"><span class="pre">nullptr</span></span><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4I0EN5torch11CppFunction11CppFunctionERR6LambdaNSt11enable_if_tIN3c104guts10is_functorINSt7decay_tI6LambdaEEE5valueENSt9nullptr_tEEE" title="Permalink to this definition">¶</a><br /></dt>
<dd><p>This overload accepts lambdas, e.g., <code class="docutils literal notranslate"><a class="reference internal" href="../library.html#classtorch_1_1_cpp_function"><span class="std std-ref"><span class="pre">CppFunction</span></span></a><span class="pre">([](const</span> <span class="pre">Tensor&</span> <span class="pre">self)</span> <span class="pre">{</span> <span class="pre">...</span> </code></p>
<p>}) </p>
</dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv4N5torch11CppFunctionD0Ev">
<span id="_CPPv3N5torch11CppFunctionD0Ev"></span><span id="_CPPv2N5torch11CppFunctionD0Ev"></span><span id="torch::CppFunction::~CppFunction"></span><span class="target" id="classtorch_1_1_cpp_function_1a0a4c9929eb4ddbe072a560b2668daa5d"></span><span class="sig-name descname"><span class="n"><span class="pre">~CppFunction</span></span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4N5torch11CppFunctionD0Ev" title="Permalink to this definition">¶</a><br /></dt>
<dd></dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv4N5torch11CppFunction11CppFunctionERK11CppFunction">
<span id="_CPPv3N5torch11CppFunction11CppFunctionERK11CppFunction"></span><span id="_CPPv2N5torch11CppFunction11CppFunctionERK11CppFunction"></span><span id="torch::CppFunction::CppFunction__CppFunctionCR"></span><span class="target" id="classtorch_1_1_cpp_function_1ac2a028de3c9efc4e38915558d195b0de"></span><span class="sig-name descname"><span class="n"><span class="pre">CppFunction</span></span></span><span class="sig-paren">(</span><span class="k"><span class="pre">const</span></span><span class="w"> </span><a class="reference internal" href="#_CPPv4N5torch11CppFunction11CppFunctionERK11CppFunction" title="torch::CppFunction::CppFunction"><span class="n"><span class="pre">CppFunction</span></span></a><span class="p"><span class="pre">&</span></span><span class="sig-paren">)</span><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="k"><span class="pre">delete</span></span><a class="headerlink" href="#_CPPv4N5torch11CppFunction11CppFunctionERK11CppFunction" title="Permalink to this definition">¶</a><br /></dt>
<dd></dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv4N5torch11CppFunctionaSERK11CppFunction">
<span id="_CPPv3N5torch11CppFunctionaSERK11CppFunction"></span><span id="_CPPv2N5torch11CppFunctionaSERK11CppFunction"></span><span id="torch::CppFunction::assign-operator__CppFunctionCR"></span><span class="target" id="classtorch_1_1_cpp_function_1a67b7b4e66db118d81dc7a927699dba92"></span><a class="reference internal" href="#_CPPv4N5torch11CppFunctionE" title="torch::CppFunction"><span class="n"><span class="pre">CppFunction</span></span></a><span class="w"> </span><span class="p"><span class="pre">&</span></span><span class="sig-name descname"><span class="k"><span class="pre">operator</span></span><span class="o"><span class="pre">=</span></span></span><span class="sig-paren">(</span><span class="k"><span class="pre">const</span></span><span class="w"> </span><a class="reference internal" href="#_CPPv4N5torch11CppFunctionE" title="torch::CppFunction"><span class="n"><span class="pre">CppFunction</span></span></a><span class="p"><span class="pre">&</span></span><span class="sig-paren">)</span><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="k"><span class="pre">delete</span></span><a class="headerlink" href="#_CPPv4N5torch11CppFunctionaSERK11CppFunction" title="Permalink to this definition">¶</a><br /></dt>
<dd></dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv4N5torch11CppFunction11CppFunctionERR11CppFunction">
<span id="_CPPv3N5torch11CppFunction11CppFunctionERR11CppFunction"></span><span id="_CPPv2N5torch11CppFunction11CppFunctionERR11CppFunction"></span><span id="torch::CppFunction::CppFunction__CppFunctionRR"></span><span class="target" id="classtorch_1_1_cpp_function_1a061103d8286d5398825f6a7f056b3b17"></span><span class="sig-name descname"><span class="n"><span class="pre">CppFunction</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="#_CPPv4N5torch11CppFunction11CppFunctionERR11CppFunction" title="torch::CppFunction::CppFunction"><span class="n"><span class="pre">CppFunction</span></span></a><span class="p"><span class="pre">&</span></span><span class="p"><span class="pre">&</span></span><span class="sig-paren">)</span><span class="w"> </span><span class="k"><span class="pre">noexcept</span></span><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="k"><span class="pre">default</span></span><a class="headerlink" href="#_CPPv4N5torch11CppFunction11CppFunctionERR11CppFunction" title="Permalink to this definition">¶</a><br /></dt>
<dd></dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv4N5torch11CppFunctionaSERR11CppFunction">
<span id="_CPPv3N5torch11CppFunctionaSERR11CppFunction"></span><span id="_CPPv2N5torch11CppFunctionaSERR11CppFunction"></span><span id="torch::CppFunction::assign-operator__CppFunctionRR"></span><span class="target" id="classtorch_1_1_cpp_function_1a15ddc267337f8457b6e2d3fcb8ad94d6"></span><a class="reference internal" href="#_CPPv4N5torch11CppFunctionE" title="torch::CppFunction"><span class="n"><span class="pre">CppFunction</span></span></a><span class="w"> </span><span class="p"><span class="pre">&</span></span><span class="sig-name descname"><span class="k"><span class="pre">operator</span></span><span class="o"><span class="pre">=</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="#_CPPv4N5torch11CppFunctionE" title="torch::CppFunction"><span class="n"><span class="pre">CppFunction</span></span></a><span class="p"><span class="pre">&</span></span><span class="p"><span class="pre">&</span></span><span class="sig-paren">)</span><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="k"><span class="pre">default</span></span><a class="headerlink" href="#_CPPv4N5torch11CppFunctionaSERR11CppFunction" title="Permalink to this definition">¶</a><br /></dt>
<dd></dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv4NO5torch11CppFunction5debugENSt6stringE">
<span id="_CPPv3NO5torch11CppFunction5debugENSt6stringE"></span><span id="_CPPv2NO5torch11CppFunction5debugENSt6stringE"></span><span id="torch::CppFunction::debug__ssO"></span><span class="target" id="classtorch_1_1_cpp_function_1a1973a27cfde9b49409f7edca837998cd"></span><span class="k"><span class="pre">inline</span></span><span class="w"> </span><a class="reference internal" href="#_CPPv4N5torch11CppFunctionE" title="torch::CppFunction"><span class="n"><span class="pre">CppFunction</span></span></a><span class="w"> </span><span class="p"><span class="pre">&</span></span><span class="p"><span class="pre">&</span></span><span class="sig-name descname"><span class="n"><span class="pre">debug</span></span></span><span class="sig-paren">(</span><span class="n"><span class="pre">std</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">string</span></span><span class="w"> </span><span class="n sig-param"><span class="pre">d</span></span><span class="sig-paren">)</span><span class="w"> </span><span class="p"><span class="pre">&&</span></span><a class="headerlink" href="#_CPPv4NO5torch11CppFunction5debugENSt6stringE" title="Permalink to this definition">¶</a><br /></dt>
<dd></dd></dl>
</div>
<div class="breathe-sectiondef docutils container">
<p class="breathe-sectiondef-title rubric" id="breathe-section-title-public-static-functions">Public Static Functions</p>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv4N5torch11CppFunction15makeFallthroughEv">
<span id="_CPPv3N5torch11CppFunction15makeFallthroughEv"></span><span id="_CPPv2N5torch11CppFunction15makeFallthroughEv"></span><span id="torch::CppFunction::makeFallthrough"></span><span class="target" id="classtorch_1_1_cpp_function_1a69be67b7ac572937f1786a81905ef2c7"></span><span class="k"><span class="pre">static</span></span><span class="w"> </span><span class="k"><span class="pre">inline</span></span><span class="w"> </span><a class="reference internal" href="#_CPPv4N5torch11CppFunctionE" title="torch::CppFunction"><span class="n"><span class="pre">CppFunction</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">makeFallthrough</span></span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4N5torch11CppFunction15makeFallthroughEv" title="Permalink to this definition">¶</a><br /></dt>
<dd><p>This creates a fallthrough function. </p>
<p>Fallthrough functions immediately redispatch to the next available dispatch key, but are implemented more efficiently than a hand written function done in the same way. </p>
</dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv4I_PN3c1011BoxedKernel19BoxedKernelFunctionEEN5torch11CppFunction21makeFromBoxedFunctionE11CppFunctionv">
<span id="_CPPv3I_PN3c1011BoxedKernel19BoxedKernelFunctionEEN5torch11CppFunction21makeFromBoxedFunctionEv"></span><span id="_CPPv2I_PN3c1011BoxedKernel19BoxedKernelFunctionEEN5torch11CppFunction21makeFromBoxedFunctionEv"></span><span class="k"><span class="pre">template</span></span><span class="p"><span class="pre"><</span></span><span class="n"><span class="pre">c10</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">BoxedKernel</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">BoxedKernelFunction</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="sig-name descname"><span class="n"><span class="pre">func</span></span></span><span class="p"><span class="pre">></span></span><br /><span class="target" id="classtorch_1_1_cpp_function_1a6591d6e48059314a6b0789b68c9abe2e"></span><span class="k"><span class="pre">static</span></span><span class="w"> </span><span class="k"><span class="pre">inline</span></span><span class="w"> </span><a class="reference internal" href="#_CPPv4N5torch11CppFunctionE" title="torch::CppFunction"><span class="n"><span class="pre">CppFunction</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">makeFromBoxedFunction</span></span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4I_PN3c1011BoxedKernel19BoxedKernelFunctionEEN5torch11CppFunction21makeFromBoxedFunctionE11CppFunctionv" title="Permalink to this definition">¶</a><br /></dt>
<dd><p>Create a function from a boxed kernel function with signature <code class="docutils literal notranslate"><span class="pre">void(const</span> <span class="pre">OperatorHandle&,</span> <span class="pre">Stack*)</span></code>; i.e., they receive a stack of arguments in a boxed calling convention, rather than in the native C++ calling convention. </p>
<p>Boxed functions are typically only used to register backend fallbacks via <a class="reference internal" href="../library.html#classtorch_1_1_library_1a662da4bc1e19e98ff41d3e483d0865bc"><span class="std std-ref">torch::Library::fallback()</span></a>. </p>
</dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv4I_PN3c1011BoxedKernel36BoxedKernelFunction_withDispatchKeysEEN5torch11CppFunction21makeFromBoxedFunctionE11CppFunctionv">
<span id="_CPPv3I_PN3c1011BoxedKernel36BoxedKernelFunction_withDispatchKeysEEN5torch11CppFunction21makeFromBoxedFunctionEv"></span><span id="_CPPv2I_PN3c1011BoxedKernel36BoxedKernelFunction_withDispatchKeysEEN5torch11CppFunction21makeFromBoxedFunctionEv"></span><span class="k"><span class="pre">template</span></span><span class="p"><span class="pre"><</span></span><span class="n"><span class="pre">c10</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">BoxedKernel</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">BoxedKernelFunction_withDispatchKeys</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="sig-name descname"><span class="n"><span class="pre">func</span></span></span><span class="p"><span class="pre">></span></span><br /><span class="target" id="classtorch_1_1_cpp_function_1a6591d6e48059314a6b0789b68c9abe2e"></span><span class="k"><span class="pre">static</span></span><span class="w"> </span><span class="k"><span class="pre">inline</span></span><span class="w"> </span><a class="reference internal" href="#_CPPv4N5torch11CppFunctionE" title="torch::CppFunction"><span class="n"><span class="pre">CppFunction</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">makeFromBoxedFunction</span></span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4I_PN3c1011BoxedKernel36BoxedKernelFunction_withDispatchKeysEEN5torch11CppFunction21makeFromBoxedFunctionE11CppFunctionv" title="Permalink to this definition">¶</a><br /></dt>
<dd></dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv4I0EN5torch11CppFunction20makeFromBoxedFunctorE11CppFunctionNSt10unique_ptrI13KernelFunctorEE">
<span id="_CPPv3I0EN5torch11CppFunction20makeFromBoxedFunctorENSt10unique_ptrI13KernelFunctorEE"></span><span id="_CPPv2I0EN5torch11CppFunction20makeFromBoxedFunctorENSt10unique_ptrI13KernelFunctorEE"></span><span class="k"><span class="pre">template</span></span><span class="p"><span class="pre"><</span></span><span class="k"><span class="pre">class</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">KernelFunctor</span></span></span><span class="p"><span class="pre">></span></span><br /><span class="target" id="classtorch_1_1_cpp_function_1a5a49c17224c86b300a918ef75d70f51b"></span><span class="k"><span class="pre">static</span></span><span class="w"> </span><span class="k"><span class="pre">inline</span></span><span class="w"> </span><a class="reference internal" href="#_CPPv4N5torch11CppFunctionE" title="torch::CppFunction"><span class="n"><span class="pre">CppFunction</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">makeFromBoxedFunctor</span></span></span><span class="sig-paren">(</span><span class="n"><span class="pre">std</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">unique_ptr</span></span><span class="p"><span class="pre"><</span></span><a class="reference internal" href="#_CPPv4I0EN5torch11CppFunction20makeFromBoxedFunctorE11CppFunctionNSt10unique_ptrI13KernelFunctorEE" title="torch::CppFunction::makeFromBoxedFunctor::KernelFunctor"><span class="n"><span class="pre">KernelFunctor</span></span></a><span class="p"><span class="pre">></span></span><span class="w"> </span><span class="n sig-param"><span class="pre">kernelFunctor</span></span><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4I0EN5torch11CppFunction20makeFromBoxedFunctorE11CppFunctionNSt10unique_ptrI13KernelFunctorEE" title="Permalink to this definition">¶</a><br /></dt>
<dd><p>Create a function from a boxed kernel functor which defines <code class="docutils literal notranslate"><span class="pre">operator()(const</span> <span class="pre">OperatorHandle&,</span> <span class="pre">DispatchKeySet,</span> <span class="pre">Stack*)</span></code> (receiving arguments from boxed calling convention) and inherits from <code class="docutils literal notranslate"><span class="pre">c10::OperatorKernel</span></code>. </p>
<p>Unlike makeFromBoxedFunction, functions registered in this way can also carry additional state which is managed by the functor; this is useful if you’re writing an adapter to some other implementation, e.g., a Python callable, which is dynamically associated with the registered kernel. </p>
</dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv4I0_NSt11enable_if_tIN3c104guts16is_function_typeI7FuncPtrE5valueENSt9nullptr_tEEEEN5torch11CppFunction23makeFromUnboxedFunctionE11CppFunctionP7FuncPtr">
<span id="_CPPv3I0_NSt11enable_if_tIN3c104guts16is_function_typeI7FuncPtrE5valueENSt9nullptr_tEEEEN5torch11CppFunction23makeFromUnboxedFunctionEP7FuncPtr"></span><span id="_CPPv2I0_NSt11enable_if_tIN3c104guts16is_function_typeI7FuncPtrE5valueENSt9nullptr_tEEEEN5torch11CppFunction23makeFromUnboxedFunctionEP7FuncPtr"></span><span class="k"><span class="pre">template</span></span><span class="p"><span class="pre"><</span></span><span class="k"><span class="pre">typename</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">FuncPtr</span></span></span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="n"><span class="pre">std</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">enable_if_t</span></span><span class="p"><span class="pre"><</span></span><span class="n"><span class="pre">c10</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">guts</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">is_function_type</span></span><span class="p"><span class="pre"><</span></span><a class="reference internal" href="#_CPPv4I0_NSt11enable_if_tIN3c104guts16is_function_typeI7FuncPtrE5valueENSt9nullptr_tEEEEN5torch11CppFunction23makeFromUnboxedFunctionE11CppFunctionP7FuncPtr" title="torch::CppFunction::makeFromUnboxedFunction::FuncPtr"><span class="n"><span class="pre">FuncPtr</span></span></a><span class="p"><span class="pre">></span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">value</span></span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="n"><span class="pre">std</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">nullptr_t</span></span><span class="p"><span class="pre">></span></span><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="k"><span class="pre">nullptr</span></span><span class="p"><span class="pre">></span></span><br /><span class="target" id="classtorch_1_1_cpp_function_1aba8dfeff023d6bd13d0fa3f72cb7e648"></span><span class="k"><span class="pre">static</span></span><span class="w"> </span><span class="k"><span class="pre">inline</span></span><span class="w"> </span><a class="reference internal" href="#_CPPv4N5torch11CppFunctionE" title="torch::CppFunction"><span class="n"><span class="pre">CppFunction</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">makeFromUnboxedFunction</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="#_CPPv4I0_NSt11enable_if_tIN3c104guts16is_function_typeI7FuncPtrE5valueENSt9nullptr_tEEEEN5torch11CppFunction23makeFromUnboxedFunctionE11CppFunctionP7FuncPtr" title="torch::CppFunction::makeFromUnboxedFunction::FuncPtr"><span class="n"><span class="pre">FuncPtr</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n sig-param"><span class="pre">f</span></span><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4I0_NSt11enable_if_tIN3c104guts16is_function_typeI7FuncPtrE5valueENSt9nullptr_tEEEEN5torch11CppFunction23makeFromUnboxedFunctionE11CppFunctionP7FuncPtr" title="Permalink to this definition">¶</a><br /></dt>
<dd><p>Create a function from an unboxed kernel function. </p>
<p>This is typically used to register common operators. </p>
</dd></dl>
<dl class="cpp function">
<dt class="sig sig-object cpp" id="_CPPv4I0_NSt11enable_if_tIN3c1032is_compile_time_function_pointerI7FuncPtrE5valueENSt9nullptr_tEEEEN5torch11CppFunction23makeFromUnboxedFunctionE11CppFunction7FuncPtr">
<span id="_CPPv3I0_NSt11enable_if_tIN3c1032is_compile_time_function_pointerI7FuncPtrE5valueENSt9nullptr_tEEEEN5torch11CppFunction23makeFromUnboxedFunctionE7FuncPtr"></span><span id="_CPPv2I0_NSt11enable_if_tIN3c1032is_compile_time_function_pointerI7FuncPtrE5valueENSt9nullptr_tEEEEN5torch11CppFunction23makeFromUnboxedFunctionE7FuncPtr"></span><span class="k"><span class="pre">template</span></span><span class="p"><span class="pre"><</span></span><span class="k"><span class="pre">typename</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">FuncPtr</span></span></span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="n"><span class="pre">std</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">enable_if_t</span></span><span class="p"><span class="pre"><</span></span><span class="n"><span class="pre">c10</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">is_compile_time_function_pointer</span></span><span class="p"><span class="pre"><</span></span><a class="reference internal" href="#_CPPv4I0_NSt11enable_if_tIN3c1032is_compile_time_function_pointerI7FuncPtrE5valueENSt9nullptr_tEEEEN5torch11CppFunction23makeFromUnboxedFunctionE11CppFunction7FuncPtr" title="torch::CppFunction::makeFromUnboxedFunction::FuncPtr"><span class="n"><span class="pre">FuncPtr</span></span></a><span class="p"><span class="pre">></span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">value</span></span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="n"><span class="pre">std</span></span><span class="p"><span class="pre">::</span></span><span class="n"><span class="pre">nullptr_t</span></span><span class="p"><span class="pre">></span></span><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="k"><span class="pre">nullptr</span></span><span class="p"><span class="pre">></span></span><br /><span class="target" id="classtorch_1_1_cpp_function_1a8432c854c1e080e0a904a1e4e7e93d11"></span><span class="k"><span class="pre">static</span></span><span class="w"> </span><span class="k"><span class="pre">inline</span></span><span class="w"> </span><a class="reference internal" href="#_CPPv4N5torch11CppFunctionE" title="torch::CppFunction"><span class="n"><span class="pre">CppFunction</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">makeFromUnboxedFunction</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="#_CPPv4I0_NSt11enable_if_tIN3c1032is_compile_time_function_pointerI7FuncPtrE5valueENSt9nullptr_tEEEEN5torch11CppFunction23makeFromUnboxedFunctionE11CppFunction7FuncPtr" title="torch::CppFunction::makeFromUnboxedFunction::FuncPtr"><span class="n"><span class="pre">FuncPtr</span></span></a><span class="w"> </span><span class="n sig-param"><span class="pre">f</span></span><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4I0_NSt11enable_if_tIN3c1032is_compile_time_function_pointerI7FuncPtrE5valueENSt9nullptr_tEEEEN5torch11CppFunction23makeFromUnboxedFunctionE11CppFunction7FuncPtr" title="Permalink to this definition">¶</a><br /></dt>
<dd><p>Create a function from a compile time unboxed kernel function pointer. </p>
<p>This is typically used to register common operators. Compile time function pointers can be used to allow the compiler to optimize (e.g. inline) calls to it. </p>
</dd></dl>
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