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.

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.

The following code example obtains the id number and the type id of the control or attribute with name given by sCaName. Note that the name happens to be a control name in this example:

const char *sCaName = "presolve";
int iHeaderId, iTypeInfo;
...
if(XPRSgetattribinfo(prob, sCaName, &iHeaderId,
                     &iTypeInfo) || iHeaderId==0) {
  if(XPRSgetcontrolinfo(prob, sCaName, &iHeaderId,
                        &iTypeInfo) || iHeaderId==0) {
    printf("Unrecognized name: %s\n", sCaName);
  }
}

XPRSgetcontrolinfo.