glpkAPI (version 1.3.0)

glpkPtr-class: Class "glpkPtr"

Description

Structure of the class "glpkPtr". Objects of that class are used to hold pointers to C structures used by GLPK.

Objects from the Class

Objects can be created by calls of the form test <- initProbGLPK() or test <- mplAllocWkspGLPK().

Slots

glpkPtrType:

Object of class "character" giving the pointer type.

glpkPointer:

Object of class "externalptr" containig the pointer to a C structure.

Methods

isGLPKpointer

signature(object = "glpkPtr"): returns TRUE if glpkPointer(object) is a pointer to a GLPK problem object, otherwise FALSE.

isNULLpointerGLPK

signature(object = "glpkPtr"): returns TRUE if glpkPointer(object) is a NULL pointer, otherwise FALSE.

isTRWKSpointer

signature(object = "glpkPtr"): returns TRUE if glpkPointer(object) is a pointer to a MathProg translator workspace, otherwise FALSE.

glpkPointer

signature(object = "glpkPtr"): gets the glpkPointer slot.

glpkPtrType

signature(object = "glpkPtr"): gets the glpkPtrType slot.

glpkPtrType<-

signature(object = "glpkPtr"): sets the glpkPtrType slot.

References

Based on the package glpk by Lopaka Lee.

The GNU GLPK home page at http://www.gnu.org/software/glpk/glpk.html.

See Also

mplAllocWkspGLPK and initProbGLPK.

Examples

# NOT RUN {
    showClass("glpkPtr")
# }