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* Fix CMakeLists.txt issue with SVD

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* Fix on stack memory allocation issues
This commit is contained in:
Gael Guennebaud
2008-08-20 15:58:01 +00:00
parent 752ec27293
commit c501c7a4ef
5 changed files with 27 additions and 23 deletions
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12
Eigen/src/Core/util/Macros.h
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@@ -150,12 +150,16 @@ friend class Eigen::MatrixBase<Derived>;
#define EIGEN_ENUM_MIN(a,b) (((int)a <= (int)b) ? (int)a : (int)b)
#define EIGEN_ENUM_MAX(a,b) (((int)a >= (int)b) ? (int)a : (int)b)
/* ei_alloc_stack(TYPE,SIZE) allocates sizeof(TYPE)*SIZE bytes on the stack if sizeof(TYPE)*SIZE is smaller
* than EIGEN_STACK_ALLOCATION_LIMIT. Otherwise the memory is allocated using the operator new.
* Data allocated with ei_alloc_stack must be freed calling ei_free_stack(PTR,TYPE,SIZE)
*/
#ifdef __linux__
# define EIGEN_USE_ALLOCA 1
# define ei_alloca_or_malloc(condition, size) (condition?alloca(size):malloc(size))
# define ei_alloc_stack(TYPE,SIZE) ((sizeof(TYPE)*(SIZE)>16000000) ? new TYPE[SIZE] : (TYPE*)alloca(sizeof(TYPE)*(SIZE)))
# define ei_free_stack(PTR,TYPE,SIZE) if (sizeof(TYPE)*SIZE>16000000) delete[] PTR
#else
# define EIGEN_USE_ALLOCA 0
# define ei_alloca_or_malloc(condition, size) malloc(size)
# define ei_alloc_stack(TYPE,SIZE) new TYPE[SIZE]
# define ei_free_stack(PTR,TYPE,SIZE) delete[] PTR
#endif
#endif // EIGEN_MACROS_H