# std::basic_spanbuf<CharT,Traits>::seekpos

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< cpp‎ | io‎ | basic spanbuf

protected: pos_type seekpos( pos_type sp, std::ios_base::openmode which = std::ios_base::in | std::ios_base::out ) override; |  | (since C++23)

Repositions the next pointer to the get and/or put area, if possible, to the position indicated by `sp`.

Equivalent to return seekoff(off_type(sp), std::ios_base::beg, which);.

### Parameters

sp | - | stream position, such as one obtained by seekoff() or `seekpos()`
which | - | defines whether the input sequences, the output sequence, or both are affected. It can be one or a combination of the following constants:
Constant | Explanation
`in` | affect the input sequence
`out` | affect the output sequence

### Return value

`sp` on success or pos_type(off_type(-1)) on failure.

### Notes

`seekpos()` is called by std::basic_streambuf::pubseekpos(), which is called by the single-argument versions of std::basic_istream::seekg() and std::basic_ostream::seekp().

### Example

| This section is incomplete Reason: no example

### See also

pubseekpos | invokes seekpos() (public member function of `std::basic_streambuf<CharT,Traits>`)
seekpos [virtual] | repositions the next pointer in the input sequence, output sequence, or both using absolute addressing (virtual protected member function of `std::basic_stringbuf<CharT,Traits,Allocator>`)
seekpos [virtual] | repositions the next pointer in the input sequence, output sequence, or both using absolute addressing (virtual protected member function of `std::strstreambuf`)

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