Fortran module which provides the definition of the ELPA API. Do not use directly! Use the module "elpa". More...

Data Types
interface	elpa_associate_int_i
	abstract definition of associate method for integer pointers Parameters More...

interface	elpa_can_set_i
	abstract definition of can_set method for integer values Parameters More...

interface	elpa_cholesky_d_i
	abstract definition of interface to do a cholesky decomposition of a double real matrix More...

interface	elpa_cholesky_dc_i
	abstract definition of interface to do a cholesky decomposition of a double complex matrix More...

interface	elpa_cholesky_f_i
	abstract definition of interface to do a cholesky decomposition of a single real matrix More...

interface	elpa_cholesky_fc_i
	abstract definition of interface to do a cholesky decomposition of a single complex matrix More...

interface	elpa_destroy_i
	abstract definition of interface to destroy an ELPA object Parameters More...

interface	elpa_eigenvalues_d_i
	abstract definition of interface to solve double real eigenvalue problem More...

interface	elpa_eigenvalues_dc_i
	abstract definition of interface to solve double complex eigenvalue problem More...

interface	elpa_eigenvalues_f_i
	abstract definition of interface to solve single real eigenvalue problem More...

interface	elpa_eigenvalues_fc_i
	abstract definition of interface to solve single complex eigenvalue problem More...

interface	elpa_eigenvectors_d_i
	abstract definition of interface to solve double real eigenvalue problem More...

interface	elpa_eigenvectors_dc_i
	abstract definition of interface to solve double complex eigenvalue problem More...

interface	elpa_eigenvectors_f_i
	abstract definition of interface to solve single real eigenvalue problem More...

interface	elpa_eigenvectors_fc_i
	abstract definition of interface to solve single complex eigenvalue problem More...

interface	elpa_get_double_i
	abstract definition of get method for double values Parameters More...

interface	elpa_get_integer_i
	abstract definition of get method for integer values Parameters More...

interface	elpa_get_time_i
	abstract definition of get_time method to querry the timer Parameters More...

interface	elpa_hermitian_multiply_d_i
	abstract definition of interface to compute C : = A*T B for double real matrices where A is a square matrix (selfa,selfna) which is optionally upper or lower triangular B is a (selfna,ncb) matrix C is a (selfna,ncb) matrix where optionally only the upper or lower triangle may be computed More...

interface	elpa_hermitian_multiply_dc_i
	abstract definition of interface to compute C : = A*H B where A is a square matrix (selfna,selfa) which is optionally upper or lower triangular B is a (selfna,ncb) matrix C is a (selfna,ncb) matrix where optionally only the upper or lower triangle may be computed More...

interface	elpa_hermitian_multiply_f_i
	abstract definition of interface to compute C : = A*T B where A is a square matrix (selfna,selfna) which is optionally upper or lower triangular B is a (selfna,ncb) matrix C is a (selfna,ncb) matrix where optionally only the upper or lower triangle may be computed More...

interface	elpa_hermitian_multiply_fc_i
	abstract definition of interface to compute C : = A*H B where A is a square matrix (selfna,selfna) which is optionally upper or lower triangular B is a (selfna,ncb) matrix C is a (selfna,ncb) matrix where optionally only the upper or lower triangle may be computed More...

interface	elpa_invert_trm_d_i
	abstract definition of interface to invert a triangular double real matrix More...

interface	elpa_invert_trm_dc_i
	abstract definition of interface to invert a triangular double complex matrix More...

interface	elpa_invert_trm_f_i
	abstract definition of interface to invert a triangular single real matrix Parameters More...

interface	elpa_invert_trm_fc_i
	abstract definition of interface to invert a triangular single complex matrix More...

interface	elpa_is_set_i
	abstract definition of is_set method for integer values Parameters More...

interface	elpa_print_times_i
	abstract definition of print method for timer Parameters More...

interface	elpa_set_double_i
	abstract definition of set method for double values Parameters More...

interface	elpa_set_integer_i
	abstract definition of set method for integer values Parameters More...

interface	elpa_setup_i
	abstract definition of setup method Parameters More...

interface	elpa_solve_tridiagonal_d_i
	abstract definition of interface to solve the eigenvalue problem for a double-precision real valued tridiangular matrix More...

interface	elpa_solve_tridiagonal_f_i
	abstract definition of interface to solve the eigenvalue problem for a single-precision real valued tridiangular matrix More...

interface	elpa_strlen_c
	definition of helper function to get C strlen Parameters More...

type	elpa_t
	Abstract definition of the elpa_t type. More...

interface	elpa_timer_start_i
	abstract definition of the start method for timer Parameters More...

interface	elpa_timer_stop_i
	abstract definition of the stop method for timer Parameters More...

Functions/Subroutines
integer(kind=c_int) function	elpa_init (api_version)
	function to intialize the ELPA library Parameters More...

integer function	elpa_initialized ()
	function to check whether the ELPA library has been correctly initialised Parameters More...

subroutine	elpa_uninit ()
	subroutine to uninit the ELPA library. Does nothing at the moment. Might do sth. later More...

character(kind=c_char, len=elpa_strlen_c(elpa_strerr_c(elpa_error))) function, pointer	elpa_strerr (elpa_error)
	helper function for error strings Parameters More...

character(kind=c_char, len=elpa_strlen_c(ptr)) function, pointer	elpa_c_string (ptr)
	helper function for c strings Parameters More...

character(kind=c_char, len=elpa_int_value_to_strlen_c(name//c_null_char, value)) function, pointer	elpa_int_value_to_string (name, value, error)
	function to convert an integer in its string representation Parameters More...

integer(kind=c_int) function	elpa_int_string_to_value (name, string, error)
	function to convert a string in its integer representation: Parameters More...

integer function	elpa_option_cardinality (option_name)
	function to get the number of possible choices for an option Parameters More...

integer function	elpa_option_enumerate (option_name, i)
	function to enumerate an option Parameters More...

Variables
integer, parameter, private	earliest_api_version = 20170403
	Definition of the earliest API version supported with the current release. More...

integer, parameter, private	current_api_version = 20170403
	Definition of the current API version. More...

logical, private	initdone = .false.

Detailed Description

Fortran module which provides the definition of the ELPA API. Do not use directly! Use the module "elpa".

Function/Subroutine Documentation

◆ elpa_c_string()

character(kind=c_char, len=elpa_strlen_c(ptr)) function, pointer elpa_api::elpa_c_string ( type(c_ptr), intent(in) ptr )

helper function for c strings Parameters

Parameters

ptr	type(c_ptr)

Returns: string string

◆ elpa_init()

integer(kind=c_int) function elpa_api::elpa_init ( integer(kind=c_int), intent(in), value api_version )

function to intialize the ELPA library Parameters

Parameters

api_version integer: api_version that ELPA should use

Returns: error integer: error code, which can be queried with elpa_strerr

◆ elpa_initialized()

integer function elpa_api::elpa_initialized ( )

function to check whether the ELPA library has been correctly initialised Parameters

Returns: state integer: state is either ELPA_OK or ELPA_ERROR, which can be queried with elpa_strerr

◆ elpa_int_string_to_value()

integer(kind=c_int) function elpa_api::elpa_int_string_to_value	(	character(kind=c_char, len=*), intent(in)	name,
		character(kind=c_char, len=*), intent(in), target	string,
		integer(kind=c_int), intent(out), optional	error
	)

function to convert a string in its integer representation: Parameters

Parameters

name	string: the key
string	string: the string whose integer representation should be associated with the key
error	integer, optional: error code, which can be queried with elpa_strerr()

Returns: value integer: the integer representation of the string

◆ elpa_int_value_to_string()

character(kind=c_char, len=elpa_int_value_to_strlen_c(name // c_null_char, value)) function, pointer elpa_api::elpa_int_value_to_string	(	character(kind=c_char, len=*), intent(in)	name,
		integer(kind=c_int), intent(in)	value,
		integer(kind=c_int), intent(out), optional	error
	)

function to convert an integer in its string representation Parameters

Parameters

name	string: the key
value	integer: the value correponding to the key
error	integer, optional: error code, which can be queried with elpa_strerr()

Returns: string string: the string representation

◆ elpa_option_cardinality()

integer function elpa_api::elpa_option_cardinality ( character(kind=c_char, len=*), intent(in) option_name )

function to get the number of possible choices for an option Parameters

Parameters

option_name string: the option

Returns: number integer: the total number of possible values to be chosen

◆ elpa_option_enumerate()

integer function elpa_api::elpa_option_enumerate	(	character(kind=c_char, len=*), intent(in)	option_name,
		integer, intent(in)	i
	)

function to enumerate an option Parameters

Parameters

option_name	string: the option
i	integer

Returns: option integer

◆ elpa_strerr()

character(kind=c_char, len=elpa_strlen_c(elpa_strerr_c(elpa_error))) function, pointer elpa_api::elpa_strerr ( integer, intent(in) elpa_error )

helper function for error strings Parameters

Parameters

elpa_error integer: error code to querry

Returns: string string: error string

◆ elpa_uninit()

subroutine elpa_api::elpa_uninit ( void )

subroutine to uninit the ELPA library. Does nothing at the moment. Might do sth. later

Variable Documentation

◆ current_api_version

integer, parameter, private elpa_api::current_api_version = 20170403

private

Definition of the current API version.

◆ earliest_api_version

integer, parameter, private elpa_api::earliest_api_version = 20170403

private

Definition of the earliest API version supported with the current release.

◆ initdone

logical, private elpa_api::initdone = .false.

private

Data Types

Functions/Subroutines

Variables

Detailed Description

Function/Subroutine Documentation

◆ elpa_c_string()

◆ elpa_init()

◆ elpa_initialized()

◆ elpa_int_string_to_value()

◆ elpa_int_value_to_string()

◆ elpa_option_cardinality()

◆ elpa_option_enumerate()

◆ elpa_strerr()

◆ elpa_uninit()

Variable Documentation

◆ current_api_version

◆ earliest_api_version

◆ initdone