wuffs_base__slice_u8__suffix returns up to the last up_to bytes of s.

wuffs_base__token__value_base_category returns a negative value if the token was not a simple token.

wuffs_base__token__value_extension returns a negative value if the token was not an extended token.

* @brief Wrapper function to simulate a C++ constructor * for a bounding box of type pgl_box3f. * * @param lower * @param upper * @return pgl_box