overview of functions provided#
// typedefs typedef float spc_; typedef double rpc_; typedef int ipc_; // structs struct gls_ainfo_type; struct gls_control_type; struct gls_finfo_type; struct gls_sinfo_type; // global functions void gls_initialize(void **data, struct gls_control_type* control); void gls_read_specfile(struct gls_control_type* control, const char specfile[]); void gls_import(struct gls_control_type* control, void **data, ipc_ *status); void gls_reset_control(struct gls_control_type* control, void **data, ipc_ *status); void gls_information( void **data, struct gls_ainfo_type* ainfo, struct gls_finfo_type* finfo, struct gls_sinfo_type* sinfo, ipc_ *status ); void gls_finalize(void **data, struct gls_contro_typel* control, ipc_ *status);
typedefs#
typedef float spc_
spc_
is real single precision
typedef double rpc_
rpc_
is the real working precision used, but may be changed to float
by
defining the preprocessor variable REAL_32
or (if supported) to
__real128
using the variable REAL_128
.
typedef int ipc_
ipc_
is the default integer word length used, but may be changed to
int64_t
by defining the preprocessor variable INTEGER_64
.
function and structure names#
The function and structure names described below are appropriate for the
default real working precision (double
) and integer word length
(int32_t
). To use the functions and structures with different precisions
and integer word lengths, an additional suffix must be added to their names
(and the arguments set accordingly). The appropriate suffices are:
_s
for single precision (float
) reals and
standard 32-bit (int32_t
) integers;
_q
for quadruple precision (__real128
) reals (if supported) and
standard 32-bit (int32_t
) integers;
_64
for standard precision (double
) reals and
64-bit (int64_t
) integers;
_s_64
for single precision (float
) reals and
64-bit (int64_t
) integers; and
_q_64
for quadruple precision (__real128
) reals (if supported) and
64-bit (int64_t
) integers.
Thus a call to gls_initialize
below will instead be
void gls_initialize_s_64(void **data, struct gls_control_type_s_64* control, int64_t *status)
if single precision (float
) reals and 64-bit (int64_t
) integers are
required. Thus it is possible to call functions for this package
with more that one precision and/or integer word length at same time. An
example is provided for the package expo
,
and the obvious modifications apply equally here.
function calls#
void gls_initialize(void **data, struct gls_control_type* control)
Set default control values and initialize private data
Parameters:
data |
holds private internal data |
control |
is a struct containing control information (see gls_control_type) |
void gls_read_specfile(struct gls_control_type* control, const char specfile[])
Read the content of a specification file, and assign values associated with given keywords to the corresponding control parameters. An in-depth discussion of specification files is available, and a detailed list of keywords with associated default values is provided in $GALAHAD/src/gls/GLS.template. See also Table 2.1 in the Fortran documentation provided in $GALAHAD/doc/gls.pdf for a list of how these keywords relate to the components of the control structure.
Parameters:
control |
is a struct containing control information (see gls_control_type) |
specfile |
is a character string containing the name of the specification file |
void gls_import(struct gls_control_type* control, void **data, ipc_ *status)
Import problem data into internal storage prior to solution.
Parameters:
control |
is a struct whose members provide control paramters for the remaining prcedures (see gls_control_type) |
data |
holds private internal data |
status |
is a scalar variable of type ipc_, that gives the exit status from the package. Possible values are:
|
void gls_reset_control(struct gls_control_type* control, void **data, ipc_ *status)
Reset control parameters after import if required.
Parameters:
control |
is a struct whose members provide control paramters for the remaining prcedures (see gls_control_type) |
data |
holds private internal data |
status |
is a scalar variable of type ipc_, that gives the exit status from the package. Possible values are:
|
void gls_information( void **data, struct gls_ainfo_type* ainfo, struct gls_finfo_type* finfo, struct gls_sinfo_type* sinfo, ipc_ *status )
Provides output information
Parameters:
data |
holds private internal data |
ainfo |
is a struct containing analysis output information (see gls_ainfo_type) |
finfo |
is a struct containing factorization output information (see gls_finfo_type) |
sinfo |
is a struct containing solver output information (see gls_sinfo_type) |
status |
is a scalar variable of type ipc_, that gives the exit status from the package. Possible values are (currently):
|
void gls_finalize(void **data, struct gls_control_type* control, ipc_ *status)
Deallocate all internal private storage
Parameters:
data |
holds private internal data |
control |
is a struct containing control information (see gls_control_type) |
status |
is a scalar variable of type ipc_, that gives the exit status from the package. Possible values are (currently):
|