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XPRSgetattribinfo

Purpose
Accesses the id number and the type information of an attribute given its name. An attribute name may be for example XPRS_ROWS. Names are case-insensitive and may or may not have the XPRS_ prefix. The id number is the constant used to identify the attribute for calls to functions such as XPRSgetintattrib. The type information returned will be one of the below integer constants defined in the xprs.h header file. The function will return an id number of 0 and a type value of XPRS_TYPE_NOTDEFINED if the name is not recognized as an attribute name. Note that this will occur if the name is a control name and not an attribute name.
Topic area
Controls and Attributes
Synopsis
int XPRS_CC XPRSgetattribinfo(XPRSprob prob, const char* name, int* p_id, int* p_type);
Arguments
prob 
The current problem.
name 
The name of the attribute to be queried. Names are case-insensitive and may or may not have the XPRS_ prefix. A full list of all attributes may be found in Chapter Control Parameters, or from the list in the xprs.h header file.
p_id 
Pointer to an integer where the id number will be returned.
p_type 
Pointer to an integer where the type id will be returned. The value will be one of the following constants from xprs.h:
XPRS_TYPE_NOTDEFINED The name was not recognized.
XPRS_TYPE_INT 32-bit integer.
XPRS_TYPE_INT64 64-bit integer.
XPRS_TYPE_DOUBLE Double precision floating point.
XPRS_TYPE_STRING String.
Example
The following code example obtains the id number and the type id of the control or attribute with name given by name. Note that the name happens to be a control name in this example: 
const char *name = "presolve";
int id, type;
...
if(XPRSgetattribinfo(prob, name, &id,
                     &type) || id==0) {
  if(XPRSgetcontrolinfo(prob, name, &id,
                        &type) || id==0) {
    printf("Unrecognized name: %s\n", name);
  }
}
Related topics
XPRSgetcontrolinfo.

Parent Topic Console and Library Functions

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