Viewing file:  isl_multi_intersect.c (4.51 KB) -rw-r--r--
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/*
* Copyright 2011 Sven Verdoolaege
* Copyright 2012-2013 Ecole Normale Superieure
*
* Use of this software is governed by the MIT license
*
* Written by Sven Verdoolaege,
* Ecole Normale Superieure, 45 rue d’Ulm, 75230 Paris, France
*/
#include <isl_multi_macro.h>
/* Does the space of "domain" correspond to that of the domain of "multi"?
* The parameters do not need to be aligned.
*/
static isl_bool FN(MULTI(BASE),compatible_domain)(
__isl_keep MULTI(BASE) *multi, __isl_keep DOM *domain)
{
isl_bool ok;
isl_space *space, *domain_space;
domain_space = FN(DOM,get_space)(domain);
space = FN(MULTI(BASE),get_space)(multi);
ok = isl_space_has_domain_tuples(domain_space, space);
isl_space_free(space);
isl_space_free(domain_space);
return ok;
}
/* Check that the space of "domain" corresponds to
* that of the domain of "multi", ignoring parameters.
*/
static isl_stat FN(MULTI(BASE),check_compatible_domain)(
__isl_keep MULTI(BASE) *multi, __isl_keep DOM *domain)
{
isl_bool ok;
ok = FN(MULTI(BASE),compatible_domain)(multi, domain);
if (ok < 0)
return isl_stat_error;
if (!ok)
isl_die(FN(DOM,get_ctx)(domain), isl_error_invalid,
"incompatible spaces", return isl_stat_error);
return isl_stat_ok;
}
/* Intersect the explicit domain of "multi" with "domain".
*
* The parameters of "multi" and "domain" are assumed to have been aligned.
*
* In the case of an isl_multi_union_pw_aff object, the explicit domain
* is allowed to have only constraints on the parameters, while
* "domain" contains actual domain elements. In this case,
* "domain" is intersected with those parameter constraints and
* then used as the explicit domain of "multi".
*/
static __isl_give MULTI(BASE) *FN(MULTI(BASE),domain_intersect_aligned)(
__isl_take MULTI(BASE) *multi, __isl_take DOM *domain)
{
isl_bool is_params;
DOM *multi_dom;
if (FN(MULTI(BASE),check_compatible_domain)(multi, domain) < 0)
goto error;
if (FN(MULTI(BASE),check_has_explicit_domain)(multi) < 0)
goto error;
is_params = FN(DOM,is_params)(multi->u.dom);
if (is_params < 0)
goto error;
multi_dom = FN(MULTI(BASE),get_explicit_domain)(multi);
if (!is_params) {
domain = FN(DOM,intersect)(multi_dom, domain);
} else {
isl_set *params;
params = FN(DOM,params)(multi_dom);
domain = FN(DOM,intersect_params)(domain, params);
}
multi = FN(MULTI(BASE),set_explicit_domain)(multi, domain);
return multi;
error:
FN(MULTI(BASE),free)(multi);
FN(DOM,free)(domain);
return NULL;
}
/* Intersect the explicit domain of "multi" with "domain".
* First align the parameters, if needed.
*/
static __isl_give MULTI(BASE) *FN(MULTI(BASE),domain_intersect)(
__isl_take MULTI(BASE) *multi, __isl_take DOM *domain)
{
return FN(FN(MULTI(BASE),align_params),DOMBASE)(multi, domain,
FN(MULTI(BASE),domain_intersect_aligned));
}
/* Intersect the domain of "multi" with "domain".
*
* If "multi" has an explicit domain, then only this domain
* needs to be intersected.
*/
__isl_give MULTI(BASE) *FN(MULTI(BASE),intersect_domain)(
__isl_take MULTI(BASE) *multi, __isl_take DOM *domain)
{
if (FN(MULTI(BASE),has_explicit_domain)(multi))
return FN(MULTI(BASE),domain_intersect)(multi, domain);
return FN(FN(MULTI(BASE),apply),DOMBASE)(multi, domain,
&FN(EL,intersect_domain));
}
/* Intersect the parameter domain of the explicit domain of "multi"
* with "domain".
*/
static __isl_give MULTI(BASE) *FN(MULTI(BASE),domain_intersect_params_aligned)(
__isl_take MULTI(BASE) *multi, __isl_take isl_set *domain)
{
DOM *multi_dom;
multi_dom = FN(MULTI(BASE),get_explicit_domain)(multi);
multi_dom = FN(DOM,intersect_params)(multi_dom, domain);
multi = FN(MULTI(BASE),set_explicit_domain)(multi, multi_dom);
return multi;
}
/* Intersect the parameter domain of the explicit domain of "multi"
* with "domain".
* First align the parameters, if needed.
*/
static __isl_give MULTI(BASE) *FN(MULTI(BASE),domain_intersect_params)(
__isl_take MULTI(BASE) *multi, __isl_take isl_set *domain)
{
return FN(FN(MULTI(BASE),align_params),set)(multi, domain,
FN(MULTI(BASE),domain_intersect_params_aligned));
}
/* Intersect the parameter domain of "multi" with "domain".
*
* If "multi" has an explicit domain, then only this domain
* needs to be intersected.
*/
__isl_give MULTI(BASE) *FN(MULTI(BASE),intersect_params)(
__isl_take MULTI(BASE) *multi, __isl_take isl_set *domain)
{
if (FN(MULTI(BASE),has_explicit_domain)(multi))
return FN(MULTI(BASE),domain_intersect_params)(multi, domain);
return FN(MULTI(BASE),apply_set)(multi, domain,
&FN(EL,intersect_params));
}
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