@param s Pointer to the tag data, as returned by bam_aux_get(). @return The value, or 0 if the tag was not a character ('A') type If the tag is not a character type, errno is set to EINVAL.
See Implementation
@param s Pointer to the tag data, as returned by bam_aux_get(). @return The value, or 0 if the tag was not a character ('A') type If the tag is not a character type, errno is set to EINVAL.