al_draw_justified_ustr - Allegro 5 API

       Like  al_draw_justified_text(3alleg5),  except  the  text  is  passed  as  an  ALLEGRO_USTR  instead of a
       NUL-terminated char array.

       al_draw_justified_ustr - Allegro 5 API

al_draw_justified_text(3alleg5), al_draw_justified_textf(3alleg5).

Allegro reference manual                                                         al_draw_justified_ustr(3alleg5)

              #include <allegro5/allegro_font.h>

              void al_draw_justified_ustr(const ALLEGRO_FONT *font,
                 ALLEGRO_COLOR color, float x1, float x2,
                 float y, float diff, int flags, const ALLEGRO_USTR *ustr)