Tcl_GetLongFromObj

Tcl_IntObj(3)               Tcl Library Procedures               Tcl_IntObj(3)



______________________________________________________________________________

NAME
       Tcl_NewIntObj,  Tcl_NewLongObj, Tcl_SetIntObj, Tcl_SetLongObj, Tcl_Get-
       IntFromObj, Tcl_GetLongFromObj - manipulate Tcl objects as integers

SYNOPSIS
       #include <tcl.h>

       Tcl_Obj *
       Tcl_NewIntObj(intValue)

       Tcl_Obj *
       Tcl_NewLongObj(longValue)

       Tcl_SetIntObj(objPtr, intValue)

       Tcl_SetLongObj(objPtr, longValue)

       int
       Tcl_GetIntFromObj(interp, objPtr, intPtr)

       int
       Tcl_GetLongFromObj(interp, objPtr, longPtr)

ARGUMENTS
       int          intValue  (in)      Integer value used  to  initialize  or
                                        set an integer object.

       long         longValue (in)      Long  integer value used to initialize
                                        or set an integer object.

       Tcl_Obj      *objPtr   (in/out)  For Tcl_SetIntObj and  Tcl_SetLongObj,
                                        this  points  to the object to be con-
                                        verted to integer type.  For  Tcl_Get-
                                        IntFromObj   and   Tcl_GetLongFromObj,
                                        this refers to the object  from  which
                                        to  get  an  integer  or  long integer
                                        value;  if  objPtr  does  not  already
                                        point to an integer object, an attempt
                                        will be made to convert it to one.

       Tcl_Interp   *interp   (in/out)  If an error occurs during  conversion,
                                        an error message is left in the inter-
                                        preter's result object  unless  interp
                                        is NULL.

       int          *intPtr   (out)     Points  to  place to store the integer
                                        value  obtained  by  Tcl_GetIntFromObj
                                        from objPtr.

       long         *longPtr  (out)     Points  to  place  to  store  the long
                                        integer  value  obtained  by  Tcl_Get-
                                        LongFromObj from objPtr.
_________________________________________________________________


DESCRIPTION
       These  procedures  are  used  to  create,  modify, and read integer Tcl
       objects from C code.  Tcl_NewIntObj, Tcl_NewLongObj, Tcl_SetIntObj, and
       Tcl_SetLongObj  create a new object of integer type or modify an exist-
       ing object to have integer type.  Tcl_NewIntObj and  Tcl_SetIntObj  set
       the  object to have the integer value given by intValue, while Tcl_New-
       LongObj and Tcl_SetLongObj set the object  to  have  the  long  integer
       value  given  by  longValue.  Tcl_NewIntObj and Tcl_NewLongObj return a
       pointer to a newly created object with  reference  count  zero.   These
       procedures  set  the object's type to be integer and assign the integer
       value  to  the  object's  internal  representation  longValue   member.
       Tcl_SetIntObj  and Tcl_SetLongObj invalidate any old string representa-
       tion and, if the object is not already an integer object, free any  old
       internal representation.

       Tcl_GetIntFromObj  and  Tcl_GetLongFromObj attempt to return an integer
       value from the Tcl object objPtr.  If the  object  is  not  already  an
       integer  object,  they  will attempt to convert it to one.  If an error
       occurs during conversion, they return TCL_ERROR and leave an error mes-
       sage  in  the interpreter's result object unless interp is NULL.  Also,
       if the long integer held in the object's internal representation  long-
       Value  member  can not be represented in a (non-long) integer, Tcl_Get-
       IntFromObj returns TCL_ERROR and leaves an error message in the  inter-
       preter's  result  object unless interp is NULL.  Otherwise, both proce-
       dures return TCL_OK and store the integer or the long integer value  in
       the address given by intPtr and longPtr respectively.  If the object is
       not already an integer object, the conversion will free any old  inter-
       nal representation.


SEE ALSO
       Tcl_NewObj, Tcl_DecrRefCount, Tcl_IncrRefCount, Tcl_GetObjResult


KEYWORDS
       integer, integer object, integer type, internal representation, object,
       object type, string representation



Tcl                                   8.0                        Tcl_IntObj(3)