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$XMCOPY
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.TH "OFFSET ELEMENT POINTER" 3P "29 February 1991"
.SH NAME
OFFSET ELEMENT POINTER \- move the element pointer in the open structure relative to its current position
.IX "Element Pointer" "OFFSET ELEMENT POINTER"
.IX "Current Element Pointer" "OFFSET ELEMENT POINTER"
.SH SYNOPSIS
.SS C Syntax
.ft B
.ta 1.25i 3i
.nf
void
poffset_elem_ptr ( ep_offset )
Pint	ep_offset;	\fIelement pointer offset\fP
.fi
.ft R
.SS Required PHIGS Operating States
(PHOP, *, STOP, *)
.SH DESCRIPTION
.SS Purpose
\s-2OFFSET ELEMENT POINTER\s+2 moves the element pointer in the currently open structure a specified number of elements from its current position.
.SS C Input Parameter
.IP \fIep_offset\fP
Specifies the number of structure elements to move the element pointer from its current position.
.SS Execution
\s-2OFFSET ELEMENT POINTER\s+2 adds \fIelement pointer offset\fP to the value of the
element pointer in the open structure. The offset may be positive or negative.
The pointer is set to point to the resulting element number.
.sp
If the resulting element number is less than 0, the element pointer is set to 0.
.sp
If the resulting element number is greater than the number of elements in the open structure, the element pointer is set to the last element in the structure.
.SH ERRORS
.IP 005
Ignoring function, function requires state 
(\s-2PHOP\s+2, \s-2*\s+2, \s-2STOP\s+2, \s-2*\s+2)
.SH SEE ALSO
.nf
.IP
.ta 0.5i
.SM "INQUIRE ELEMENT POINTER (3P)"
.SM "INQUIRE CURRENT ELEMENT TYPE AND SIZE (3P)"
.SM "ELEMENT SEARCH (3P)"
.SM "SET ELEMENT POINTER (3P)"
.SM "SET ELEMENT POINTER AT LABEL (3P)"
.fi
