al_utf16_width - Man Page

#include <allegro5/allegro.h>

size_t al_utf16_width(int c)

Returns the number of bytes that would be occupied by the specified code point when encoded in UTF-16. This is either 2 or 4 bytes for legal code point values. Otherwise returns 0.

al_utf16_encode(3), al_utf8_width(3)

al_utf16_encode(3), al_utf8_width(3).