__isl_take isl_aff *aff2);
__isl_give isl_aff *isl_aff_neg(__isl_take isl_aff *aff);
__isl_give isl_aff *isl_aff_ceil(__isl_take isl_aff *aff);
+ __isl_give isl_aff *isl_aff_scale(__isl_take isl_aff *aff,
+ isl_int f);
+ __isl_give isl_aff *isl_aff_scale_down(__isl_take isl_aff *aff,
+ isl_int f);
An expression can be printed using
__isl_give isl_aff *isl_aff_sub(__isl_take isl_aff *aff1,
__isl_take isl_aff *aff2);
+__isl_give isl_aff *isl_aff_scale(__isl_take isl_aff *aff, isl_int f);
+__isl_give isl_aff *isl_aff_scale_down(__isl_take isl_aff *aff, isl_int f);
+
__isl_give isl_printer *isl_printer_print_aff(__isl_take isl_printer *p,
__isl_keep isl_aff *aff);
void isl_aff_dump(__isl_keep isl_aff *aff);
{
return isl_aff_add(aff1, isl_aff_neg(aff2));
}
+
+__isl_give isl_aff *isl_aff_scale(__isl_take isl_aff *aff, isl_int f)
+{
+ isl_int gcd;
+
+ if (isl_int_is_one(f))
+ return aff;
+
+ aff = isl_aff_cow(aff);
+ if (!aff)
+ return NULL;
+ aff->v = isl_vec_cow(aff->v);
+ if (!aff->v)
+ return isl_aff_free(aff);
+
+ isl_int_init(gcd);
+ isl_int_gcd(gcd, aff->v->el[0], f);
+ isl_int_divexact(aff->v->el[0], aff->v->el[0], gcd);
+ isl_int_divexact(gcd, f, gcd);
+ isl_seq_scale(aff->v->el + 1, aff->v->el + 1, gcd, aff->v->size - 1);
+ isl_int_clear(gcd);
+
+ return aff;
+}
+
+__isl_give isl_aff *isl_aff_scale_down(__isl_take isl_aff *aff, isl_int f)
+{
+ isl_int gcd;
+
+ if (isl_int_is_one(f))
+ return aff;
+
+ aff = isl_aff_cow(aff);
+ if (!aff)
+ return NULL;
+ aff->v = isl_vec_cow(aff->v);
+ if (!aff->v)
+ return isl_aff_free(aff);
+
+ isl_int_init(gcd);
+ isl_seq_gcd(aff->v->el + 1, aff->v->size - 1, &gcd);
+ isl_int_gcd(gcd, gcd, f);
+ isl_seq_scale_down(aff->v->el + 1, aff->v->el + 1, gcd, aff->v->size - 1);
+ isl_int_divexact(gcd, f, gcd);
+ isl_int_mul(aff->v->el[0], aff->v->el[0], gcd);
+ isl_int_clear(gcd);
+
+ return aff;
+}