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### 332. Consider adding increment and decrement operators to std::fpos< T >

Section: 29.5.3 [fpos] Status: NAD Submitter: PremAnand M. Rao Opened: 2001-08-27 Last modified: 2016-01-28

Priority: Not Prioritized

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Discussion:

Increment and decrement operators are missing from Table 88 -- Position type requirements in 29.5.3 [fpos].

Proposed resolution:

Table 88 (section 27.4.3) -- Position type requirements be updated to include increment and decrement operators.

    expression        return type     operational    note

    ++p               fpos&           p += O(1)
    p++               fpos            { P tmp = p;
                                        ++p;
                                        return tmp; }
    --p               fpos&           p -= O(1)
    p--               fpos            { P tmp = p;
                                        --p;
                                        return tmp; }

Rationale:

The LWG believes this is a request for extension, not a defect report. Additionally, nobody saw a clear need for this extension; `fpos` is used only in very limited ways.