export isl_pw_multi_aff_{n,foreach}_piece
export isl_pw_multi_aff_{n,foreach}_piece

isl_pw_multi_aff_foreach_piece is similar
to other exported isl_*_foreach_* functions.
isl_pw_multi_aff_n_piece is useful for determining
in advance how many pieces will be examined.

Signed-off-by: Sven Verdoolaege <235c10dd23b819f81cdc9756a251746bc184cab6@gmail.com>

Meinersbur/isl,Meinersbur/isl,Meinersbur/isl,Meinersbur/isl