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 #ifndef EIGEN_WARNINGS_DISABLED
 #define EIGEN_WARNINGS_DISABLED
 
 #ifdef _MSC_VER
   // 4100 - unreferenced formal parameter (occurred e.g. in aligned_allocator::destroy(pointer p))
   // 4101 - unreferenced local variable
   // 4181 - qualifier applied to reference type ignored
   // 4211 - nonstandard extension used : redefined extern to static
   // 4244 - 'argument' : conversion from 'type1' to 'type2', possible loss of data
   // 4273 - QtAlignedMalloc, inconsistent DLL linkage
   // 4324 - structure was padded due to declspec(align())
   // 4503 - decorated name length exceeded, name was truncated
   // 4512 - assignment operator could not be generated
   // 4522 - 'class' : multiple assignment operators specified
   // 4700 - uninitialized local variable 'xyz' used
   // 4714 - function marked as __forceinline not inlined
   // 4717 - 'function' : recursive on all control paths, function will cause runtime stack overflow
   // 4800 - 'type' : forcing value to bool 'true' or 'false' (performance warning)
   #ifndef EIGEN_PERMANENTLY_DISABLE_STUPID_WARNINGS
     #pragma warning( push )
   #endif
   #pragma warning( disable : 4100 4101 4181 4211 4244 4273 4324 4503 4512 4522 4700 4714 4717 4800)
 
 #elif defined __INTEL_COMPILER
   // 2196 - routine is both "inline" and "noinline" ("noinline" assumed)
   //        ICC 12 generates this warning even without any inline keyword, when defining class methods 'inline' i.e. inside of class body
   //        typedef that may be a reference type.
   // 279  - controlling expression is constant
   //        ICC 12 generates this warning on assert(constant_expression_depending_on_template_params) and frankly this is a legitimate use case.
   // 1684 - conversion from pointer to same-sized integral type (potential portability problem)
   // 2259 - non-pointer conversion from "Eigen::Index={ptrdiff_t={long}}" to "int" may lose significant bits
   #ifndef EIGEN_PERMANENTLY_DISABLE_STUPID_WARNINGS
     #pragma warning push
   #endif
   #pragma warning disable 2196 279 1684 2259
 
 #elif defined __clang__
   // -Wconstant-logical-operand - warning: use of logical && with constant operand; switch to bitwise & or remove constant
   //     this is really a stupid warning as it warns on compile-time expressions involving enums
   #ifndef EIGEN_PERMANENTLY_DISABLE_STUPID_WARNINGS
     #pragma clang diagnostic push
   #endif
   #pragma clang diagnostic ignored "-Wconstant-logical-operand"
   #if __clang_major__ >= 3 && __clang_minor__ >= 5
     #pragma clang diagnostic ignored "-Wabsolute-value"
   #endif
   #if __clang_major__ >= 10
     #pragma clang diagnostic ignored "-Wimplicit-int-float-conversion"
   #endif
   #if ( defined(__ALTIVEC__) || defined(__VSX__) ) && __cplusplus < 201103L
     // warning: generic selections are a C11-specific feature
     // ignoring warnings thrown at vec_ctf in Altivec/PacketMath.h
     #pragma clang diagnostic ignored "-Wc11-extensions"
   #endif
 
 #elif defined __GNUC__
 
   #if (!defined(EIGEN_PERMANENTLY_DISABLE_STUPID_WARNINGS)) &&  (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
     #pragma GCC diagnostic push
   #endif
   // g++ warns about local variables shadowing member functions, which is too strict
   #pragma GCC diagnostic ignored "-Wshadow"
   #if __GNUC__ == 4 && __GNUC_MINOR__ < 8
     // Until g++-4.7 there are warnings when comparing unsigned int vs 0, even in templated functions:
     #pragma GCC diagnostic ignored "-Wtype-limits"
   #endif
   #if __GNUC__>=6
     #pragma GCC diagnostic ignored "-Wignored-attributes"
   #endif
   #if __GNUC__==7
     // See: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89325
     #pragma GCC diagnostic ignored "-Wattributes"
   #endif
 #endif
 
 #if defined __NVCC__
   #pragma diag_suppress boolean_controlling_expr_is_constant
   // Disable the "statement is unreachable" message
   #pragma diag_suppress code_is_unreachable
   // Disable the "dynamic initialization in unreachable code" message
   #pragma diag_suppress initialization_not_reachable
   // Disable the "invalid error number" message that we get with older versions of nvcc
   #pragma diag_suppress 1222
   // Disable the "calling a __host__ function from a __host__ __device__ function is not allowed" messages (yes, there are many of them and they seem to change with every version of the compiler)
   #pragma diag_suppress 2527
   #pragma diag_suppress 2529
   #pragma diag_suppress 2651
   #pragma diag_suppress 2653
   #pragma diag_suppress 2668
   #pragma diag_suppress 2669
   #pragma diag_suppress 2670
   #pragma diag_suppress 2671
   #pragma diag_suppress 2735
   #pragma diag_suppress 2737
   #pragma diag_suppress 2739
 #endif
 
 #else
 // warnings already disabled:
 # ifndef EIGEN_WARNINGS_DISABLED_2
 #  define EIGEN_WARNINGS_DISABLED_2
 # elif defined(EIGEN_INTERNAL_DEBUGGING)
 #  error "Do not include \"DisableStupidWarnings.h\" recursively more than twice!"
 # endif
 
 #endif // not EIGEN_WARNINGS_DISABLED

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