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Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 The GSL Team.
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<h4 class="subsection">8.4.1 Matrix allocation</h4>
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<p>The functions for allocating memory to a matrix follow the style of
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<code>malloc</code> and <code>free</code>. They also perform their own error
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checking. If there is insufficient memory available to allocate a vector
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then the functions call the GSL error handler (with an error number of
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<code>GSL_ENOMEM</code>) in addition to returning a null pointer. Thus if you
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use the library error handler to abort your program then it isn't
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necessary to check every <code>alloc</code>.
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— Function: gsl_matrix * <b>gsl_matrix_alloc</b> (<var>size_t n1, size_t n2</var>)<var><a name="index-gsl_005fmatrix_005falloc-879"></a></var><br>
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<blockquote><p>This function creates a matrix of size <var>n1</var> rows by <var>n2</var>
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columns, returning a pointer to a newly initialized matrix struct. A new
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block is allocated for the elements of the matrix, and stored in the
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<var>block</var> component of the matrix struct. The block is “owned” by the
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matrix, and will be deallocated when the matrix is deallocated.
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</p></blockquote></div>
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— Function: gsl_matrix * <b>gsl_matrix_calloc</b> (<var>size_t n1, size_t n2</var>)<var><a name="index-gsl_005fmatrix_005fcalloc-880"></a></var><br>
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<blockquote><p>This function allocates memory for a matrix of size <var>n1</var> rows by
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<var>n2</var> columns and initializes all the elements of the matrix to zero.
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</p></blockquote></div>
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— Function: void <b>gsl_matrix_free</b> (<var>gsl_matrix * m</var>)<var><a name="index-gsl_005fmatrix_005ffree-881"></a></var><br>
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<blockquote><p>This function frees a previously allocated matrix <var>m</var>. If the
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matrix was created using <code>gsl_matrix_alloc</code> then the block
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underlying the matrix will also be deallocated. If the matrix has been
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created from another object then the memory is still owned by that
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object and will not be deallocated.
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</p></blockquote></div>
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