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37 lines
1.5 KiB
C
37 lines
1.5 KiB
C
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/*
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* === FUNCTION ======================================================================
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* Name: calloc_double_matrix
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* Description: Allocate a dynamic double-matrix of size rows*columns;
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* return a pointer.
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* =====================================================================================
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*/
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double**
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calloc_double_matrix ( int rows, int columns )
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{
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int i;
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double **m;
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m = calloc ( rows, sizeof(double*) ); /* allocate pointer array */
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assert( m != NULL); /* abort if allocation failed */
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*m = calloc ( rows*columns, sizeof(double) );/* allocate data array */
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assert(*m != NULL); /* abort if allocation failed */
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for ( i=1; i<rows; i+=1 ) /* set pointers */
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m[i] = m[i-1] + columns;
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return m;
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} /* ---------- end of function calloc_double_matrix ---------- */
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/*
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* === FUNCTION ======================================================================
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* Name: free_matrix_double
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* Description: Free a dynamic double-matrix.
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* =====================================================================================
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*/
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void
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free_double_matrix ( double **m )
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{
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free(*m); /* free data array */
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free( m); /* free pointer array */
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return ;
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} /* ---------- end of function free_double_matrix ---------- */
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