// This file is part of Eigen, a lightweight C++ template library // for linear algebra. // // Copyright (C) 2008 Gael Guennebaud // Copyright (C) 2008 Benoit Jacob // // This Source Code Form is subject to the terms of the Mozilla // Public License v. 2.0. If a copy of the MPL was not distributed // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. #ifndef EIGEN_STATIC_ASSERT_H #define EIGEN_STATIC_ASSERT_H /* Some notes on Eigen's static assertion mechanism: * * - in EIGEN_STATIC_ASSERT(CONDITION,MSG) the parameter CONDITION must be a compile time boolean * expression, and MSG an enum listed in struct internal::static_assertion * * - define EIGEN_NO_STATIC_ASSERT to disable them (and save compilation time) * in that case, the static assertion is converted to the following runtime assert: * eigen_assert(CONDITION && "MSG") * * - currently EIGEN_STATIC_ASSERT can only be used in function scope * */ #ifndef EIGEN_NO_STATIC_ASSERT #if defined(__GXX_EXPERIMENTAL_CXX0X__) || (defined(_MSC_VER) && (_MSC_VER >= 1600)) // if native static_assert is enabled, let's use it #define EIGEN_STATIC_ASSERT(X,MSG) static_assert(X,#MSG); #else // not CXX0X namespace Eigen { namespace internal { template struct static_assertion {}; template<> struct static_assertion { enum { YOU_TRIED_CALLING_A_VECTOR_METHOD_ON_A_MATRIX, YOU_MIXED_VECTORS_OF_DIFFERENT_SIZES, YOU_MIXED_MATRICES_OF_DIFFERENT_SIZES, THIS_METHOD_IS_ONLY_FOR_VECTORS_OF_A_SPECIFIC_SIZE, THIS_METHOD_IS_ONLY_FOR_MATRICES_OF_A_SPECIFIC_SIZE, THIS_METHOD_IS_ONLY_FOR_OBJECTS_OF_A_SPECIFIC_SIZE, YOU_MADE_A_PROGRAMMING_MISTAKE, EIGEN_INTERNAL_ERROR_PLEASE_FILE_A_BUG_REPORT, EIGEN_INTERNAL_COMPILATION_ERROR_OR_YOU_MADE_A_PROGRAMMING_MISTAKE, YOU_CALLED_A_FIXED_SIZE_METHOD_ON_A_DYNAMIC_SIZE_MATRIX_OR_VECTOR, YOU_CALLED_A_DYNAMIC_SIZE_METHOD_ON_A_FIXED_SIZE_MATRIX_OR_VECTOR, UNALIGNED_LOAD_AND_STORE_OPERATIONS_UNIMPLEMENTED_ON_ALTIVEC, THIS_FUNCTION_IS_NOT_FOR_INTEGER_NUMERIC_TYPES, FLOATING_POINT_ARGUMENT_PASSED__INTEGER_WAS_EXPECTED, NUMERIC_TYPE_MUST_BE_REAL, COEFFICIENT_WRITE_ACCESS_TO_SELFADJOINT_NOT_SUPPORTED, WRITING_TO_TRIANGULAR_PART_WITH_UNIT_DIAGONAL_IS_NOT_SUPPORTED, THIS_METHOD_IS_ONLY_FOR_FIXED_SIZE, INVALID_MATRIX_PRODUCT, INVALID_VECTOR_VECTOR_PRODUCT__IF_YOU_WANTED_A_DOT_OR_COEFF_WISE_PRODUCT_YOU_MUST_USE_THE_EXPLICIT_FUNCTIONS, INVALID_MATRIX_PRODUCT__IF_YOU_WANTED_A_COEFF_WISE_PRODUCT_YOU_MUST_USE_THE_EXPLICIT_FUNCTION, YOU_MIXED_DIFFERENT_NUMERIC_TYPES__YOU_NEED_TO_USE_THE_CAST_METHOD_OF_MATRIXBASE_TO_CAST_NUMERIC_TYPES_EXPLICITLY, THIS_METHOD_IS_ONLY_FOR_COLUMN_MAJOR_MATRICES, THIS_METHOD_IS_ONLY_FOR_ROW_MAJOR_MATRICES, INVALID_MATRIX_TEMPLATE_PARAMETERS, INVALID_MATRIXBASE_TEMPLATE_PARAMETERS, BOTH_MATRICES_MUST_HAVE_THE_SAME_STORAGE_ORDER, THIS_METHOD_IS_ONLY_FOR_DIAGONAL_MATRIX, THE_MATRIX_OR_EXPRESSION_THAT_YOU_PASSED_DOES_NOT_HAVE_THE_EXPECTED_TYPE, THIS_METHOD_IS_ONLY_FOR_EXPRESSIONS_WITH_DIRECT_MEMORY_ACCESS_SUCH_AS_MAP_OR_PLAIN_MATRICES, YOU_ALREADY_SPECIFIED_THIS_STRIDE, INVALID_STORAGE_ORDER_FOR_THIS_VECTOR_EXPRESSION, THE_BRACKET_OPERATOR_IS_ONLY_FOR_VECTORS__USE_THE_PARENTHESIS_OPERATOR_INSTEAD, PACKET_ACCESS_REQUIRES_TO_HAVE_INNER_STRIDE_FIXED_TO_1, THIS_METHOD_IS_ONLY_FOR_SPECIFIC_TRANSFORMATIONS, YOU_CANNOT_MIX_ARRAYS_AND_MATRICES, YOU_PERFORMED_AN_INVALID_TRANSFORMATION_CONVERSION, THIS_EXPRESSION_IS_NOT_A_LVALUE__IT_IS_READ_ONLY, YOU_ARE_TRYING_TO_USE_AN_INDEX_BASED_ACCESSOR_ON_AN_EXPRESSION_THAT_DOES_NOT_SUPPORT_THAT, THIS_METHOD_IS_ONLY_FOR_1x1_EXPRESSIONS, THIS_METHOD_IS_ONLY_FOR_EXPRESSIONS_OF_BOOL, THIS_METHOD_IS_ONLY_FOR_ARRAYS_NOT_MATRICES, YOU_PASSED_A_ROW_VECTOR_BUT_A_COLUMN_VECTOR_WAS_EXPECTED, YOU_PASSED_A_COLUMN_VECTOR_BUT_A_ROW_VECTOR_WAS_EXPECTED, THE_INDEX_TYPE_MUST_BE_A_SIGNED_TYPE, THE_STORAGE_ORDER_OF_BOTH_SIDES_MUST_MATCH, OBJECT_ALLOCATED_ON_STACK_IS_TOO_BIG, IMPLICIT_CONVERSION_TO_SCALAR_IS_FOR_INNER_PRODUCT_ONLY, STORAGE_LAYOUT_DOES_NOT_MATCH }; }; } // end namespace internal } // end namespace Eigen // Specialized implementation for MSVC to avoid "conditional // expression is constant" warnings. This implementation doesn't // appear to work under GCC, hence the multiple implementations. #ifdef _MSC_VER #define EIGEN_STATIC_ASSERT(CONDITION,MSG) \ {Eigen::internal::static_assertion::MSG;} #else #define EIGEN_STATIC_ASSERT(CONDITION,MSG) \ if (Eigen::internal::static_assertion::MSG) {} #endif #endif // not CXX0X #else // EIGEN_NO_STATIC_ASSERT #define EIGEN_STATIC_ASSERT(CONDITION,MSG) eigen_assert((CONDITION) && #MSG); #endif // EIGEN_NO_STATIC_ASSERT // static assertion failing if the type \a TYPE is not a vector type #define EIGEN_STATIC_ASSERT_VECTOR_ONLY(TYPE) \ EIGEN_STATIC_ASSERT(TYPE::IsVectorAtCompileTime, \ YOU_TRIED_CALLING_A_VECTOR_METHOD_ON_A_MATRIX) // static assertion failing if the type \a TYPE is not fixed-size #define EIGEN_STATIC_ASSERT_FIXED_SIZE(TYPE) \ EIGEN_STATIC_ASSERT(TYPE::SizeAtCompileTime!=Eigen::Dynamic, \ YOU_CALLED_A_FIXED_SIZE_METHOD_ON_A_DYNAMIC_SIZE_MATRIX_OR_VECTOR) // static assertion failing if the type \a TYPE is not dynamic-size #define EIGEN_STATIC_ASSERT_DYNAMIC_SIZE(TYPE) \ EIGEN_STATIC_ASSERT(TYPE::SizeAtCompileTime==Eigen::Dynamic, \ YOU_CALLED_A_DYNAMIC_SIZE_METHOD_ON_A_FIXED_SIZE_MATRIX_OR_VECTOR) // static assertion failing if the type \a TYPE is not a vector type of the given size #define EIGEN_STATIC_ASSERT_VECTOR_SPECIFIC_SIZE(TYPE, SIZE) \ EIGEN_STATIC_ASSERT(TYPE::IsVectorAtCompileTime && TYPE::SizeAtCompileTime==SIZE, \ THIS_METHOD_IS_ONLY_FOR_VECTORS_OF_A_SPECIFIC_SIZE) // static assertion failing if the type \a TYPE is not a vector type of the given size #define EIGEN_STATIC_ASSERT_MATRIX_SPECIFIC_SIZE(TYPE, ROWS, COLS) \ EIGEN_STATIC_ASSERT(TYPE::RowsAtCompileTime==ROWS && TYPE::ColsAtCompileTime==COLS, \ THIS_METHOD_IS_ONLY_FOR_MATRICES_OF_A_SPECIFIC_SIZE) // static assertion failing if the two vector expression types are not compatible (same fixed-size or dynamic size) #define EIGEN_STATIC_ASSERT_SAME_VECTOR_SIZE(TYPE0,TYPE1) \ EIGEN_STATIC_ASSERT( \ (int(TYPE0::SizeAtCompileTime)==Eigen::Dynamic \ || int(TYPE1::SizeAtCompileTime)==Eigen::Dynamic \ || int(TYPE0::SizeAtCompileTime)==int(TYPE1::SizeAtCompileTime)),\ YOU_MIXED_VECTORS_OF_DIFFERENT_SIZES) #define EIGEN_PREDICATE_SAME_MATRIX_SIZE(TYPE0,TYPE1) \ ( \ (int(TYPE0::SizeAtCompileTime)==0 && int(TYPE1::SizeAtCompileTime)==0) \ || (\ (int(TYPE0::RowsAtCompileTime)==Eigen::Dynamic \ || int(TYPE1::RowsAtCompileTime)==Eigen::Dynamic \ || int(TYPE0::RowsAtCompileTime)==int(TYPE1::RowsAtCompileTime)) \ && (int(TYPE0::ColsAtCompileTime)==Eigen::Dynamic \ || int(TYPE1::ColsAtCompileTime)==Eigen::Dynamic \ || int(TYPE0::ColsAtCompileTime)==int(TYPE1::ColsAtCompileTime))\ ) \ ) #ifdef EIGEN2_SUPPORT #define EIGEN_STATIC_ASSERT_NON_INTEGER(TYPE) \ eigen_assert(!NumTraits::IsInteger); #else #define EIGEN_STATIC_ASSERT_NON_INTEGER(TYPE) \ EIGEN_STATIC_ASSERT(!NumTraits::IsInteger, THIS_FUNCTION_IS_NOT_FOR_INTEGER_NUMERIC_TYPES) #endif // static assertion failing if it is guaranteed at compile-time that the two matrix expression types have different sizes #define EIGEN_STATIC_ASSERT_SAME_MATRIX_SIZE(TYPE0,TYPE1) \ EIGEN_STATIC_ASSERT( \ EIGEN_PREDICATE_SAME_MATRIX_SIZE(TYPE0,TYPE1),\ YOU_MIXED_MATRICES_OF_DIFFERENT_SIZES) #define EIGEN_STATIC_ASSERT_SIZE_1x1(TYPE) \ EIGEN_STATIC_ASSERT((TYPE::RowsAtCompileTime == 1 || TYPE::RowsAtCompileTime == Dynamic) && \ (TYPE::ColsAtCompileTime == 1 || TYPE::ColsAtCompileTime == Dynamic), \ THIS_METHOD_IS_ONLY_FOR_1x1_EXPRESSIONS) #define EIGEN_STATIC_ASSERT_LVALUE(Derived) \ EIGEN_STATIC_ASSERT(internal::is_lvalue::value, \ THIS_EXPRESSION_IS_NOT_A_LVALUE__IT_IS_READ_ONLY) #define EIGEN_STATIC_ASSERT_ARRAYXPR(Derived) \ EIGEN_STATIC_ASSERT((internal::is_same::XprKind, ArrayXpr>::value), \ THIS_METHOD_IS_ONLY_FOR_ARRAYS_NOT_MATRICES) #define EIGEN_STATIC_ASSERT_SAME_XPR_KIND(Derived1, Derived2) \ EIGEN_STATIC_ASSERT((internal::is_same::XprKind, \ typename internal::traits::XprKind \ >::value), \ YOU_CANNOT_MIX_ARRAYS_AND_MATRICES) #endif // EIGEN_STATIC_ASSERT_H