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/*
* Copyright 2008-2009 Katholieke Universiteit Leuven
*
* Use of this software is governed by the GNU LGPLv2.1 license
*
* Written by Sven Verdoolaege, K.U.Leuven, Departement
* Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
*/
#include <isl_map_private.h>
#include <isl/div.h>
#include <isl/map.h>
#include <isl_dim_private.h>
#include <isl/seq.h>
static unsigned n(struct isl_div *d, enum isl_dim_type type)
{
struct isl_dim *dim = d->bmap->dim;
switch (type) {
case isl_dim_param: return dim->nparam;
case isl_dim_in: return dim->n_in;
case isl_dim_out: return dim->n_out;
case isl_dim_div: return d->bmap->n_div;
default: return 0;
}
}
unsigned isl_div_dim(__isl_keep isl_div *div, enum isl_dim_type type)
{
return n(div, type);
}
static unsigned offset(struct isl_div *d, enum isl_dim_type type)
{
struct isl_dim *dim = d->bmap->dim;
switch (type) {
case isl_dim_param: return 1 + 1;
case isl_dim_in: return 1 + 1 + dim->nparam;
case isl_dim_out: return 1 + 1 + dim->nparam + dim->n_in;
case isl_dim_div: return 1 + 1 + dim->nparam + dim->n_in + dim->n_out;
default: return 0;
}
}
struct isl_div *isl_basic_map_div(struct isl_basic_map *bmap, int pos)
{
struct isl_div *div;
if (!bmap)
goto error;
isl_assert(bmap->ctx, pos < bmap->n_div, goto error);
div = isl_alloc_type(bmap->ctx, struct isl_div);
if (!div)
goto error;
div->ctx = bmap->ctx;
isl_ctx_ref(div->ctx);
div->ref = 1;
div->bmap = bmap;
div->line = &bmap->div[pos];
return div;
error:
isl_basic_map_free(bmap);
return NULL;
}
struct isl_div *isl_basic_set_div(struct isl_basic_set *bset, int pos)
{
return isl_basic_map_div((struct isl_basic_map *)bset, pos);
}
__isl_give isl_div *isl_div_div(__isl_take isl_div *div, int pos)
{
isl_basic_map *bmap;
if (!div)
return NULL;
bmap = isl_basic_map_copy(div->bmap);
isl_div_free(div);
return isl_basic_map_div(bmap, pos);
}
struct isl_div *isl_div_alloc(struct isl_dim *dim)
{
struct isl_basic_map *bmap;
if (!dim)
return NULL;
bmap = isl_basic_map_alloc_dim(dim, 1, 0, 0);
if (!bmap)
return NULL;
isl_basic_map_alloc_div(bmap);
isl_seq_clr(bmap->div[0], 1 + 1 + isl_basic_map_total_dim(bmap));
return isl_basic_map_div(bmap, 0);
}
__isl_give isl_div *isl_div_copy(__isl_keep isl_div *div)
{
if (!div)
return NULL;
div->ref++;
return div;
}
void isl_div_free(struct isl_div *c)
{
if (!c)
return;
if (--c->ref > 0)
return;
isl_basic_map_free(c->bmap);
isl_ctx_deref(c->ctx);
free(c);
}
void isl_div_get_constant(struct isl_div *div, isl_int *v)
{
if (!div)
return;
isl_int_set(*v, div->line[0][1]);
}
void isl_div_get_denominator(struct isl_div *div, isl_int *v)
{
if (!div)
return;
isl_int_set(*v, div->line[0][0]);
}
void isl_div_get_coefficient(struct isl_div *div,
enum isl_dim_type type, int pos, isl_int *v)
{
if (!div)
return;
isl_assert(div->ctx, pos < n(div, type), return);
isl_int_set(*v, div->line[0][offset(div, type) + pos]);
}
void isl_div_set_constant(struct isl_div *div, isl_int v)
{
if (!div)
return;
isl_int_set(div->line[0][1], v);
}
void isl_div_set_denominator(struct isl_div *div, isl_int v)
{
if (!div)
return;
isl_int_set(div->line[0][0], v);
}
void isl_div_set_coefficient(struct isl_div *div,
enum isl_dim_type type, int pos, isl_int v)
{
if (!div)
return;
isl_assert(div->ctx, pos < n(div, type), return);
isl_int_set(div->line[0][offset(div, type) + pos], v);
}
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