@param fai Pointer to the faidx_t struct
@param c_name Region name
@param p_beg_i Beginning position number (zero-based)
@param p_end_i End position number (zero-based)
@param len Length of the region; -2 if c_name not present, -1 general error
@return Pointer to the sequence; null on failure
The returned sequence is allocated by malloc() family and should be destroyed
by end users by calling free() on it.
@param fai Pointer to the faidx_t struct @param c_name Region name @param p_beg_i Beginning position number (zero-based) @param p_end_i End position number (zero-based) @param len Length of the region; -2 if c_name not present, -1 general error @return Pointer to the sequence; null on failure
The returned sequence is allocated by malloc() family and should be destroyed by end users by calling free() on it.