[in] | m | The number of rows of the matrix A. m >= 0. |
[in] | n | The number of columns of the matrix A. n >= 0. |
[in,out] | A | On entry, the M-by-N matrix to be factored. On exit, the tile factors L and U from the factorization. |
[in] | lda | The leading dimension of the array A. LDA >= max(1,M). |
[out] | IPIV | The pivot indices that define the permutations. |
[out] | info |
- 0 on successful exit
- <0 if -i, the i-th argument had an illegal value
- >0 if i, U(i,i) is exactly zero. The factorization has been completed, but the factor U is exactly singular, and division by zero will occur if it is used to solve a system of equations.
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