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.TH "al_ustr_prev_get" "3alleg5" "" "Allegro reference manual" ""
.hy
.SH NAME
.PP
al_ustr_prev_get - Allegro 5 API
.SH SYNOPSIS
.IP
.nf
\f[C]
#include <allegro5/allegro.h>

int32_t al_ustr_prev_get(const ALLEGRO_USTR *us, int *pos)
\f[R]
.fi
.SH DESCRIPTION
.PP
Find the beginning of a code point before byte offset \f[V]*pos\f[R],
then return it.
Note this performs a \f[I]pre-increment\f[R].
.PP
On success returns the code point value.
If \f[V]pos\f[R] was out of bounds (e.g.\ past the end of the string),
return -1.
On an error, such as an invalid byte sequence, return -2.
As with al_ustr_prev(3alleg5), invalid byte sequences may be skipped
while advancing.
.SH SEE ALSO
.PP
al_ustr_get_next(3alleg5)