MAGMA  2.3.0 Matrix Algebra for GPU and Multicore Architectures
getf2: LU panel factorization - no pivoting

## Functions

magma_int_t magma_cgetf2_nopiv (magma_int_t m, magma_int_t n, magmaFloatComplex *A, magma_int_t lda, magma_int_t *info)
CGETF2_NOPIV computes an LU factorization of a general m-by-n matrix A without pivoting. More...

magma_int_t magma_dgetf2_nopiv (magma_int_t m, magma_int_t n, double *A, magma_int_t lda, magma_int_t *info)
DGETF2_NOPIV computes an LU factorization of a general m-by-n matrix A without pivoting. More...

magma_int_t magma_sgetf2_nopiv (magma_int_t m, magma_int_t n, float *A, magma_int_t lda, magma_int_t *info)
SGETF2_NOPIV computes an LU factorization of a general m-by-n matrix A without pivoting. More...

magma_int_t magma_zgetf2_nopiv (magma_int_t m, magma_int_t n, magmaDoubleComplex *A, magma_int_t lda, magma_int_t *info)
ZGETF2_NOPIV computes an LU factorization of a general m-by-n matrix A without pivoting. More...

## Function Documentation

 magma_int_t magma_cgetf2_nopiv ( magma_int_t m, magma_int_t n, magmaFloatComplex * A, magma_int_t lda, magma_int_t * info )

CGETF2_NOPIV computes an LU factorization of a general m-by-n matrix A without pivoting.

The factorization has the form A = L * U where L is lower triangular with unit diagonal elements (lower trapezoidal if m > n), and U is upper triangular (upper trapezoidal if m < n).

This is the right-looking Level 2 BLAS version of the algorithm.

This is a CPU-only (not accelerated) version.

Parameters
 [in] m INTEGER The number of rows of the matrix A. M >= 0. [in] n INTEGER The number of columns of the matrix A. N >= 0. [in,out] A COMPLEX array, dimension (LDA,N) On entry, the m by n matrix to be factored. On exit, the factors L and U from the factorization A = P*L*U; the unit diagonal elements of L are not stored. [in] lda INTEGER The leading dimension of the array A. LDA >= max(1,M). [out] info INTEGER = 0: successful exit < 0: if INFO = -k, the k-th argument had an illegal value > 0: if INFO = k, U(k,k) 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.
 magma_int_t magma_dgetf2_nopiv ( magma_int_t m, magma_int_t n, double * A, magma_int_t lda, magma_int_t * info )

DGETF2_NOPIV computes an LU factorization of a general m-by-n matrix A without pivoting.

The factorization has the form A = L * U where L is lower triangular with unit diagonal elements (lower trapezoidal if m > n), and U is upper triangular (upper trapezoidal if m < n).

This is the right-looking Level 2 BLAS version of the algorithm.

This is a CPU-only (not accelerated) version.

Parameters
 [in] m INTEGER The number of rows of the matrix A. M >= 0. [in] n INTEGER The number of columns of the matrix A. N >= 0. [in,out] A DOUBLE PRECISION array, dimension (LDA,N) On entry, the m by n matrix to be factored. On exit, the factors L and U from the factorization A = P*L*U; the unit diagonal elements of L are not stored. [in] lda INTEGER The leading dimension of the array A. LDA >= max(1,M). [out] info INTEGER = 0: successful exit < 0: if INFO = -k, the k-th argument had an illegal value > 0: if INFO = k, U(k,k) 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.
 magma_int_t magma_sgetf2_nopiv ( magma_int_t m, magma_int_t n, float * A, magma_int_t lda, magma_int_t * info )

SGETF2_NOPIV computes an LU factorization of a general m-by-n matrix A without pivoting.

The factorization has the form A = L * U where L is lower triangular with unit diagonal elements (lower trapezoidal if m > n), and U is upper triangular (upper trapezoidal if m < n).

This is the right-looking Level 2 BLAS version of the algorithm.

This is a CPU-only (not accelerated) version.

Parameters
 [in] m INTEGER The number of rows of the matrix A. M >= 0. [in] n INTEGER The number of columns of the matrix A. N >= 0. [in,out] A REAL array, dimension (LDA,N) On entry, the m by n matrix to be factored. On exit, the factors L and U from the factorization A = P*L*U; the unit diagonal elements of L are not stored. [in] lda INTEGER The leading dimension of the array A. LDA >= max(1,M). [out] info INTEGER = 0: successful exit < 0: if INFO = -k, the k-th argument had an illegal value > 0: if INFO = k, U(k,k) 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.
 magma_int_t magma_zgetf2_nopiv ( magma_int_t m, magma_int_t n, magmaDoubleComplex * A, magma_int_t lda, magma_int_t * info )

ZGETF2_NOPIV computes an LU factorization of a general m-by-n matrix A without pivoting.

The factorization has the form A = L * U where L is lower triangular with unit diagonal elements (lower trapezoidal if m > n), and U is upper triangular (upper trapezoidal if m < n).

This is the right-looking Level 2 BLAS version of the algorithm.

This is a CPU-only (not accelerated) version.

Parameters
 [in] m INTEGER The number of rows of the matrix A. M >= 0. [in] n INTEGER The number of columns of the matrix A. N >= 0. [in,out] A COMPLEX_16 array, dimension (LDA,N) On entry, the m by n matrix to be factored. On exit, the factors L and U from the factorization A = P*L*U; the unit diagonal elements of L are not stored. [in] lda INTEGER The leading dimension of the array A. LDA >= max(1,M). [out] info INTEGER = 0: successful exit < 0: if INFO = -k, the k-th argument had an illegal value > 0: if INFO = k, U(k,k) 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.