60 lines
2.2 KiB
C
60 lines
2.2 KiB
C
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#ifndef CLOOG_MATRIX_H
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#define CLOOG_MATRIX_H
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#if defined(__cplusplus)
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extern "C"
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{
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#endif
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/* The CloogMatrix structure is equivalent to the PolyLib Matrix data structure
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* (see Wil93). This structure is devoted to represent a set of constraints.
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*
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* The whole matrix is stored in memory row after row at the p_Init address. p
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* is an array of pointers where p[i] points to the first element of the i^{th
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* row. NbRows and NbColumns are respectively the number of rows and columns of
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* the matrix. Each row corresponds to a constraint. The first element of each
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* row is an equality/inequality tag. The constraint is an equality p(x) = 0 if
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* the first element is 0, but it is an inequality p(x) \geq 0 if the first
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* element is 1. The next elements are the unknown coefficients, followed by
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* the parameter coefficients, then the constant term. For instance, the
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* following three constraints:
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*
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* -i + m = 0
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* -j + n >= 0
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* i + j - k >= 0
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*
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* would be represented by the following rows:
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*
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* # eq/in i j k m n cst
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* 0 0 -1 0 1 0 0
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* 1 -1 0 0 0 1 0
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* 1 1 1 -1 0 0 0
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*
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* To be able to provide different precision version (CLooG supports 32 bits,
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* 64 bits and arbitrary precision through the GMP library), the cloog_int_t
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* type depends on the configuration options (it may be long int for 32 bits
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* version, long long int for 64 bits version, and mpz_t for multiple precision
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* version). */
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struct cloogmatrix
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{ unsigned NbRows; /* Number of rows. */
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unsigned NbColumns; /* Number of columns. */
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cloog_int_t ** p; /* Array of pointers to the matrix rows. */
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cloog_int_t * p_Init; /* Matrix rows contiguously in memory. */
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};
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typedef struct cloogmatrix CloogMatrix;
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CloogMatrix *cloog_matrix_alloc (unsigned, unsigned);
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void cloog_matrix_free (CloogMatrix *);
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void cloog_matrix_print_structure(FILE *file, CloogMatrix *M,
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const char *prefix, const char *suffix);
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CloogMatrix *cloog_matrix_read(FILE *input);
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CloogMatrix *cloog_matrix_read_of_size(FILE *input,
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unsigned n_row, unsigned n_col);
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void cloog_matrix_print(FILE*, CloogMatrix*);
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#if defined(__cplusplus)
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}
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#endif
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#endif /* define _H */
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