return 0;
}
+/* Return the common denominator of "aff".
+ */
+__isl_give isl_val *isl_aff_get_denominator_val(__isl_keep isl_aff *aff)
+{
+ isl_ctx *ctx;
+
+ if (!aff)
+ return NULL;
+
+ ctx = isl_aff_get_ctx(aff);
+ return isl_val_int_from_isl_int(ctx, aff->v->el[0]);
+}
+
int isl_aff_get_constant(__isl_keep isl_aff *aff, isl_int *v)
{
if (!aff)
return 0;
}
+/* Return the constant term of "aff".
+ */
+__isl_give isl_val *isl_aff_get_constant_val(__isl_keep isl_aff *aff)
+{
+ isl_ctx *ctx;
+ isl_val *v;
+
+ if (!aff)
+ return NULL;
+
+ ctx = isl_aff_get_ctx(aff);
+ v = isl_val_rat_from_isl_int(ctx, aff->v->el[1], aff->v->el[0]);
+ return isl_val_normalize(v);
+}
+
int isl_aff_get_coefficient(__isl_keep isl_aff *aff,
enum isl_dim_type type, int pos, isl_int *v)
{
return 0;
}
+/* Return the coefficient of the variable of type "type" at position "pos"
+ * of "aff".
+ */
+__isl_give isl_val *isl_aff_get_coefficient_val(__isl_keep isl_aff *aff,
+ enum isl_dim_type type, int pos)
+{
+ isl_ctx *ctx;
+ isl_val *v;
+
+ if (!aff)
+ return NULL;
+
+ ctx = isl_aff_get_ctx(aff);
+ if (type == isl_dim_out)
+ isl_die(ctx, isl_error_invalid,
+ "output/set dimension does not have a coefficient",
+ return NULL);
+ if (type == isl_dim_in)
+ type = isl_dim_set;
+
+ if (pos >= isl_local_space_dim(aff->ls, type))
+ isl_die(ctx, isl_error_invalid,
+ "position out of bounds", return NULL);
+
+ pos += isl_local_space_offset(aff->ls, type);
+ v = isl_val_rat_from_isl_int(ctx, aff->v->el[1 + pos], aff->v->el[0]);
+ return isl_val_normalize(v);
+}
+
__isl_give isl_aff *isl_aff_set_denominator(__isl_take isl_aff *aff, isl_int v)
{
aff = isl_aff_cow(aff);
/* Compute
*
+ * aff mod m = aff - m * floor(aff/m)
+ *
+ * with m an integer value.
+ */
+__isl_give isl_aff *isl_aff_mod_val(__isl_take isl_aff *aff,
+ __isl_take isl_val *m)
+{
+ isl_aff *res;
+
+ if (!aff || !m)
+ goto error;
+
+ if (!isl_val_is_int(m))
+ isl_die(isl_val_get_ctx(m), isl_error_invalid,
+ "expecting integer modulo", goto error);
+
+ res = isl_aff_copy(aff);
+ aff = isl_aff_scale_down_val(aff, isl_val_copy(m));
+ aff = isl_aff_floor(aff);
+ aff = isl_aff_scale_val(aff, m);
+ res = isl_aff_sub(res, aff);
+
+ return res;
+error:
+ isl_aff_free(aff);
+ isl_val_free(m);
+ return NULL;
+}
+
+/* Compute
+ *
* pwaff mod m = pwaff - m * floor(pwaff/m)
*/
__isl_give isl_pw_aff *isl_pw_aff_mod(__isl_take isl_pw_aff *pwaff, isl_int m)
return aff;
}
+/* Multiple "aff" by "v".
+ */
+__isl_give isl_aff *isl_aff_scale_val(__isl_take isl_aff *aff,
+ __isl_take isl_val *v)
+{
+ if (!aff || !v)
+ goto error;
+
+ if (isl_val_is_one(v)) {
+ isl_val_free(v);
+ return aff;
+ }
+
+ if (!isl_val_is_rat(v))
+ isl_die(isl_aff_get_ctx(aff), isl_error_invalid,
+ "expecting rational factor", goto error);
+
+ aff = isl_aff_scale(aff, v->n);
+ aff = isl_aff_scale_down(aff, v->d);
+
+ isl_val_free(v);
+ return aff;
+error:
+ isl_aff_free(aff);
+ isl_val_free(v);
+ return NULL;
+}
+
__isl_give isl_aff *isl_aff_scale_down(__isl_take isl_aff *aff, isl_int f)
{
isl_int gcd;
return aff;
}
+/* Divide "aff" by "v".
+ */
+__isl_give isl_aff *isl_aff_scale_down_val(__isl_take isl_aff *aff,
+ __isl_take isl_val *v)
+{
+ if (!aff || !v)
+ goto error;
+
+ if (isl_val_is_one(v)) {
+ isl_val_free(v);
+ return aff;
+ }
+
+ if (!isl_val_is_rat(v))
+ isl_die(isl_aff_get_ctx(aff), isl_error_invalid,
+ "expecting rational factor", goto error);
+ if (!isl_val_is_pos(v))
+ isl_die(isl_aff_get_ctx(aff), isl_error_invalid,
+ "factor needs to be positive", goto error);
+
+ aff = isl_aff_scale(aff, v->d);
+ aff = isl_aff_scale_down(aff, v->n);
+
+ isl_val_free(v);
+ return aff;
+error:
+ isl_aff_free(aff);
+ isl_val_free(v);
+ return NULL;
+}
+
__isl_give isl_aff *isl_aff_scale_down_ui(__isl_take isl_aff *aff, unsigned f)
{
isl_int v;
return pwaff;
}
+/* Divide "pa" by "f".
+ */
+__isl_give isl_pw_aff *isl_pw_aff_scale_down_val(__isl_take isl_pw_aff *pa,
+ __isl_take isl_val *f)
+{
+ int i;
+
+ if (!pa || !f)
+ goto error;
+
+ if (isl_val_is_one(f)) {
+ isl_val_free(f);
+ return pa;
+ }
+
+ if (!isl_val_is_rat(f))
+ isl_die(isl_pw_aff_get_ctx(pa), isl_error_invalid,
+ "expecting rational factor", goto error);
+ if (!isl_val_is_pos(f))
+ isl_die(isl_pw_aff_get_ctx(pa), isl_error_invalid,
+ "factor needs to be positive", goto error);
+
+ pa = isl_pw_aff_cow(pa);
+ if (!pa)
+ return NULL;
+ if (pa->n == 0)
+ return pa;
+
+ for (i = 0; i < pa->n; ++i) {
+ pa->p[i].aff = isl_aff_scale_down_val(pa->p[i].aff,
+ isl_val_copy(f));
+ if (!pa->p[i].aff)
+ goto error;
+ }
+
+ isl_val_free(f);
+ return pa;
+error:
+ isl_pw_aff_free(pa);
+ isl_val_free(f);
+ return NULL;
+}
+
__isl_give isl_pw_aff *isl_pw_aff_floor(__isl_take isl_pw_aff *pwaff)
{
int i;
projects / platform / upstream / isl.git / blobdiff