#include <isl_mat_private.h>
#include <isl_range.h>
#include <isl_local_space_private.h>
+#include <isl_aff_private.h>
+#include <isl_config.h>
static unsigned pos(__isl_keep isl_dim *dim, enum isl_dim_type type)
{
isl_assert(ctx, size >= 0, return NULL);
rec = isl_calloc(ctx, struct isl_upoly_rec,
sizeof(struct isl_upoly_rec) +
- (size - 1) * sizeof(struct isl_upoly *));
+ size * sizeof(struct isl_upoly *));
if (!rec)
return NULL;
__isl_give struct isl_upoly *isl_upoly_dup(__isl_keep struct isl_upoly *up)
{
- struct isl_upoly *dup;
-
if (!up)
return NULL;
{
struct isl_upoly_rec *rec1;
struct isl_upoly_rec *rec2;
- struct isl_upoly_rec *res;
+ struct isl_upoly_rec *res = NULL;
int i, j;
int size;
__isl_give struct isl_upoly *isl_upoly_var_pow(isl_ctx *ctx, int pos, int power)
{
int i;
- struct isl_upoly *up;
struct isl_upoly_rec *rec;
struct isl_upoly_cst *cst;
return NULL;
}
+__isl_give isl_qpolynomial *isl_qpolynomial_scale(
+ __isl_take isl_qpolynomial *qp, isl_int v)
+{
+ return isl_qpolynomial_mul_isl_int(qp, v);
+}
+
__isl_give isl_qpolynomial *isl_qpolynomial_mul(__isl_take isl_qpolynomial *qp1,
__isl_take isl_qpolynomial *qp2)
{
__isl_give isl_qpolynomial *isl_qpolynomial_zero(__isl_take isl_dim *dim)
{
+ if (!dim)
+ return NULL;
return isl_qpolynomial_alloc(dim, 0, isl_upoly_zero(dim->ctx));
}
__isl_give isl_qpolynomial *isl_qpolynomial_one(__isl_take isl_dim *dim)
{
+ if (!dim)
+ return NULL;
return isl_qpolynomial_alloc(dim, 0, isl_upoly_one(dim->ctx));
}
__isl_give isl_qpolynomial *isl_qpolynomial_infty(__isl_take isl_dim *dim)
{
+ if (!dim)
+ return NULL;
return isl_qpolynomial_alloc(dim, 0, isl_upoly_infty(dim->ctx));
}
__isl_give isl_qpolynomial *isl_qpolynomial_neginfty(__isl_take isl_dim *dim)
{
+ if (!dim)
+ return NULL;
return isl_qpolynomial_alloc(dim, 0, isl_upoly_neginfty(dim->ctx));
}
__isl_give isl_qpolynomial *isl_qpolynomial_nan(__isl_take isl_dim *dim)
{
+ if (!dim)
+ return NULL;
return isl_qpolynomial_alloc(dim, 0, isl_upoly_nan(dim->ctx));
}
struct isl_qpolynomial *qp;
struct isl_upoly_cst *cst;
+ if (!dim)
+ return NULL;
+
qp = isl_qpolynomial_alloc(dim, 0, isl_upoly_zero(dim->ctx));
if (!qp)
return NULL;
return NULL;
}
-int isl_qpolynomial_is_equal(__isl_keep isl_qpolynomial *qp1,
+int isl_qpolynomial_plain_is_equal(__isl_keep isl_qpolynomial *qp1,
__isl_keep isl_qpolynomial *qp2)
{
+ int equal;
+
if (!qp1 || !qp2)
return -1;
+ equal = isl_dim_equal(qp1->dim, qp2->dim);
+ if (equal < 0 || !equal)
+ return equal;
+
+ equal = isl_mat_is_equal(qp1->div, qp2->div);
+ if (equal < 0 || !equal)
+ return equal;
+
return isl_upoly_is_equal(qp1->upoly, qp2->upoly);
}
*
* After the reduction, some divs may have become redundant or identical,
* so we call substitute_non_divs and sort_divs. If these functions
- * eliminate divs of merge * two or more divs into one, the coefficients
+ * eliminate divs or merge two or more divs into one, the coefficients
* of the enclosing divs may have to be reduced again, so we call
* ourselves recursively if the number of divs decreases.
*/
static __isl_give isl_qpolynomial *reduce_divs(__isl_take isl_qpolynomial *qp)
{
- int i, j;
+ int i;
isl_vec *aff = NULL;
struct isl_upoly *s;
unsigned n_div;
isl_assert(qp->dim->ctx, type == isl_dim_param ||
type == isl_dim_set, return -1);
- active = isl_calloc_array(set->ctx, int, isl_dim_total(qp->dim));
+ active = isl_calloc_array(qp->dim->ctx, int, isl_dim_total(qp->dim));
if (set_active(qp, active) < 0)
goto error;
return -1;
}
+/* Remove divs that do not appear in the quasi-polynomial, nor in any
+ * of the divs that do appear in the quasi-polynomial.
+ */
+static __isl_give isl_qpolynomial *remove_redundant_divs(
+ __isl_take isl_qpolynomial *qp)
+{
+ int i, j;
+ int d;
+ int len;
+ int skip;
+ int *active = NULL;
+ int *reordering = NULL;
+ int redundant = 0;
+ int n_div;
+ isl_ctx *ctx;
+
+ if (!qp)
+ return NULL;
+ if (qp->div->n_row == 0)
+ return qp;
+
+ d = isl_dim_total(qp->dim);
+ len = qp->div->n_col - 2;
+ ctx = isl_qpolynomial_get_ctx(qp);
+ active = isl_calloc_array(ctx, int, len);
+ if (!active)
+ goto error;
+
+ if (up_set_active(qp->upoly, active, len) < 0)
+ goto error;
+
+ for (i = qp->div->n_row - 1; i >= 0; --i) {
+ if (!active[d + i]) {
+ redundant = 1;
+ continue;
+ }
+ for (j = 0; j < i; ++j) {
+ if (isl_int_is_zero(qp->div->row[i][2 + d + j]))
+ continue;
+ active[d + j] = 1;
+ break;
+ }
+ }
+
+ if (!redundant) {
+ free(active);
+ return qp;
+ }
+
+ reordering = isl_alloc_array(qp->div->ctx, int, len);
+ if (!reordering)
+ goto error;
+
+ for (i = 0; i < d; ++i)
+ reordering[i] = i;
+
+ skip = 0;
+ n_div = qp->div->n_row;
+ for (i = 0; i < n_div; ++i) {
+ if (!active[d + i]) {
+ qp->div = isl_mat_drop_rows(qp->div, i - skip, 1);
+ qp->div = isl_mat_drop_cols(qp->div,
+ 2 + d + i - skip, 1);
+ skip++;
+ }
+ reordering[d + i] = d + i - skip;
+ }
+
+ qp->upoly = reorder(qp->upoly, reordering);
+
+ if (!qp->upoly || !qp->div)
+ goto error;
+
+ free(active);
+ free(reordering);
+
+ return qp;
+error:
+ free(active);
+ free(reordering);
+ isl_qpolynomial_free(qp);
+ return NULL;
+}
+
__isl_give struct isl_upoly *isl_upoly_drop(__isl_take struct isl_upoly *up,
unsigned first, unsigned n)
{
{
if (!qp)
return NULL;
- if (n == 0 && !isl_dim_get_tuple_name(qp->dim, type))
+ if (n == 0 && !isl_dim_is_named_or_nested(qp->dim, type))
return qp;
qp = isl_qpolynomial_cow(qp);
#define PW isl_pw_qpolynomial
#undef EL
#define EL isl_qpolynomial
+#undef EL_IS_ZERO
+#define EL_IS_ZERO is_zero
+#undef ZERO
+#define ZERO zero
#undef IS_ZERO
#define IS_ZERO is_zero
#undef FIELD
{
int i, j, n;
struct isl_pw_qpolynomial *res;
- isl_set *set;
if (!pwqp1 || !pwqp2)
goto error;
return NULL;
}
-__isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_neg(
- __isl_take isl_pw_qpolynomial *pwqp)
-{
- int i;
-
- if (!pwqp)
- return NULL;
-
- if (isl_pw_qpolynomial_is_zero(pwqp))
- return pwqp;
-
- pwqp = isl_pw_qpolynomial_cow(pwqp);
- if (!pwqp)
- return NULL;
-
- for (i = 0; i < pwqp->n; ++i) {
- pwqp->p[i].qp = isl_qpolynomial_neg(pwqp->p[i].qp);
- if (!pwqp->p[i].qp)
- goto error;
- }
-
- return pwqp;
-error:
- isl_pw_qpolynomial_free(pwqp);
- return NULL;
-}
-
__isl_give isl_pw_qpolynomial *isl_pw_qpolynomial_sub(
__isl_take isl_pw_qpolynomial *pwqp1,
__isl_take isl_pw_qpolynomial *pwqp2)
unsigned g_pos;
int *exp;
- if (n == 0)
+ if (n == 0 && !isl_dim_is_named_or_nested(qp->dim, type))
return qp;
qp = isl_qpolynomial_cow(qp);
g_pos = pos(qp->dim, type) + first;
- qp->div = isl_mat_insert_cols(qp->div, 2 + g_pos, n);
+ qp->div = isl_mat_insert_zero_cols(qp->div, 2 + g_pos, n);
if (!qp->div)
goto error;
return isl_qpolynomial_alloc(dim, 0, up);
}
-__isl_give isl_qpolynomial *isl_qpolynomial_from_constraint(
- __isl_take isl_constraint *c, enum isl_dim_type type, unsigned pos)
+__isl_give isl_qpolynomial *isl_qpolynomial_from_aff(__isl_take isl_aff *aff)
{
- isl_int denom;
- isl_dim *dim;
+ isl_ctx *ctx;
struct isl_upoly *up;
isl_qpolynomial *qp;
- int sgn;
- if (!c)
+ if (!aff)
return NULL;
- isl_int_init(denom);
-
- isl_constraint_get_coefficient(c, type, pos, &denom);
- isl_constraint_set_coefficient(c, type, pos, c->ctx->zero);
- sgn = isl_int_sgn(denom);
- isl_int_abs(denom, denom);
- up = isl_upoly_from_affine(c->ctx, c->line[0], denom,
- 1 + isl_constraint_dim(c, isl_dim_all));
- if (sgn < 0)
- isl_int_neg(denom, denom);
- isl_constraint_set_coefficient(c, type, pos, denom);
+ ctx = isl_aff_get_ctx(aff);
+ up = isl_upoly_from_affine(ctx, aff->v->el + 1, aff->v->el[0],
+ aff->v->size - 1);
- dim = isl_dim_copy(c->bmap->dim);
+ qp = isl_qpolynomial_alloc(isl_aff_get_dim(aff),
+ aff->ls->div->n_row, up);
+ if (!qp)
+ goto error;
- isl_int_clear(denom);
- isl_constraint_free(c);
+ isl_mat_free(qp->div);
+ qp->div = isl_mat_copy(aff->ls->div);
+ qp->div = isl_mat_cow(qp->div);
+ if (!qp->div)
+ goto error;
- qp = isl_qpolynomial_alloc(dim, 0, up);
- if (sgn > 0)
- qp = isl_qpolynomial_neg(qp);
+ isl_aff_free(aff);
+ qp = reduce_divs(qp);
+ qp = remove_redundant_divs(qp);
return qp;
+error:
+ isl_aff_free(aff);
+ return NULL;
+}
+
+__isl_give isl_qpolynomial *isl_qpolynomial_from_constraint(
+ __isl_take isl_constraint *c, enum isl_dim_type type, unsigned pos)
+{
+ isl_aff *aff;
+
+ aff = isl_constraint_get_bound(c, type, pos);
+ isl_constraint_free(c);
+ return isl_qpolynomial_from_aff(aff);
}
/* For each 0 <= i < "n", replace variable "first" + i of type "type"
int i;
int n_sub;
isl_ctx *ctx;
- struct isl_upoly *up;
- unsigned n_div;
struct isl_upoly **subs;
isl_mat *mat;
projects / platform / upstream / isl.git / blobdiff