Crout.h File Reference

#include "types.h"
#include "mangling.h"

Include dependency graph for Crout.h:

Go to the source code of this file.

Functions
void	API_sgectrf (fortran_int *N, fortran_real *A, fortran_real *L, fortran_real *U, fortran_int *INFO)
void	API_dgectrf (fortran_int *N, fortran_double *A, fortran_double *L, fortran_double *U, fortran_int *INFO)
void	API_cgectrf (fortran_int *N, fortran_complex *A, fortran_complex *L, fortran_complex *U, fortran_int *INFO)
void	API_zgectrf (fortran_int *N, fortran_double_complex *A, fortran_double_complex *L, fortran_double_complex *U, fortran_int *INFO)
void	crout (fortran_int *N, fortran_real *A, fortran_real *L, fortran_real *U, fortran_int *INFO)
	Crout LU factorization of a general matrix: A = L * U.
void	crout (fortran_int *N, fortran_double *A, fortran_double *L, fortran_double *U, fortran_int *INFO)
	Crout LU factorization (double-precision).
void	crout (fortran_int *N, fortran_complex *A, fortran_complex *L, fortran_complex *U, fortran_int *INFO)
	Crout LU factorization (single-precision complex).
void	crout (fortran_int *N, fortran_double_complex *A, fortran_double_complex *L, fortran_double_complex *U, fortran_int *INFO)
	Crout LU factorization (double-precision complex).

Function Documentation

API_cgectrf()

void API_cgectrf	(	fortran_int *	N,
		fortran_complex *	A,
		fortran_complex *	L,
		fortran_complex *	U,
		fortran_int *	INFO
	)

API_dgectrf()

void API_dgectrf	(	fortran_int *	N,
		fortran_double *	A,
		fortran_double *	L,
		fortran_double *	U,
		fortran_int *	INFO
	)

API_sgectrf()

void API_sgectrf	(	fortran_int *	N,
		fortran_real *	A,
		fortran_real *	L,
		fortran_real *	U,
		fortran_int *	INFO
	)

API_zgectrf()

void API_zgectrf	(	fortran_int *	N,
		fortran_double_complex *	A,
		fortran_double_complex *	L,
		fortran_double_complex *	U,
		fortran_int *	INFO
	)

crout() [1/4]

void crout	(	fortran_int *	N,
		fortran_complex *	A,
		fortran_complex *	L,
		fortran_complex *	U,
		fortran_int *	INFO
	)

Crout LU factorization (single-precision complex).

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Parameters

[in]	N	Pointer to the matrix size (N x N).
[in]	A	Flat row-major input matrix of size N*N.
[out]	L	Flat row-major output lower-triangular matrix.
[out]	U	Flat row-major output upper-triangular matrix (unit diagonal).
[out]	INFO	Pointer to the return code.

Definition at line 102 of file Crout.h.

crout() [2/4]

void crout	(	fortran_int *	N,
		fortran_double *	A,
		fortran_double *	L,
		fortran_double *	U,
		fortran_int *	INFO
	)

Crout LU factorization (double-precision).

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Parameters

[in]	N	Pointer to the matrix size (N x N).
[in]	A	Flat row-major input matrix of size N*N.
[out]	L	Flat row-major output lower-triangular matrix.
[out]	U	Flat row-major output upper-triangular matrix (unit diagonal).
[out]	INFO	Pointer to the return code.

Definition at line 88 of file Crout.h.

crout() [3/4]

void crout	(	fortran_int *	N,
		fortran_double_complex *	A,
		fortran_double_complex *	L,
		fortran_double_complex *	U,
		fortran_int *	INFO
	)

Crout LU factorization (double-precision complex).

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Parameters

[in]	N	Pointer to the matrix size (N x N).
[in]	A	Flat row-major input matrix of size N*N.
[out]	L	Flat row-major output lower-triangular matrix.
[out]	U	Flat row-major output upper-triangular matrix (unit diagonal).
[out]	INFO	Pointer to the return code.

Definition at line 116 of file Crout.h.

crout() [4/4]

void crout	(	fortran_int *	N,
		fortran_real *	A,
		fortran_real *	L,
		fortran_real *	U,
		fortran_int *	INFO
	)

Crout LU factorization of a general matrix: A = L * U.

Computes the LU decomposition of a general N x N matrix A using the Crout algorithm. A is stored as a flat row-major array. The lower-triangular matrix L and the upper-triangular matrix U (with ones on the diagonal) are written to the output arrays.

Parameters

[in]	N	Pointer to the matrix size (N x N).
[in]	A	Flat row-major input matrix of size N*N.
[out]	L	Flat row-major output lower-triangular matrix.
[out]	U	Flat row-major output upper-triangular matrix (unit diagonal).
[out]	INFO	Pointer to the return code: 0: success < 0: zero diagonal detected in L at column |INFO|

Definition at line 74 of file Crout.h.