2 * Copyright 2008-2009 Katholieke Universiteit Leuven
4 * Use of this software is governed by the GNU LGPLv2.1 license
6 * Written by Sven Verdoolaege, K.U.Leuven, Departement
7 * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
10 #include <isl_map_private.h>
11 #include <isl_div_private.h>
13 #include <isl_space_private.h>
17 isl_ctx *isl_div_get_ctx(__isl_keep isl_div *div)
19 return div ? div->ctx : NULL;
22 static unsigned n(struct isl_div *d, enum isl_dim_type type)
24 isl_space *dim = d->bmap->dim;
26 case isl_dim_param: return dim->nparam;
27 case isl_dim_in: return dim->n_in;
28 case isl_dim_out: return dim->n_out;
29 case isl_dim_div: return d->bmap->n_div;
34 unsigned isl_div_dim(__isl_keep isl_div *div, enum isl_dim_type type)
39 static unsigned offset(struct isl_div *d, enum isl_dim_type type)
41 isl_space *dim = d->bmap->dim;
43 case isl_dim_param: return 1 + 1;
44 case isl_dim_in: return 1 + 1 + dim->nparam;
45 case isl_dim_out: return 1 + 1 + dim->nparam + dim->n_in;
46 case isl_dim_div: return 1 + 1 + dim->nparam + dim->n_in + dim->n_out;
51 struct isl_div *isl_basic_map_div(struct isl_basic_map *bmap, int pos)
58 isl_assert(bmap->ctx, pos < bmap->n_div, goto error);
60 div = isl_alloc_type(bmap->ctx, struct isl_div);
65 isl_ctx_ref(div->ctx);
68 div->line = &bmap->div[pos];
72 isl_basic_map_free(bmap);
76 struct isl_div *isl_basic_set_div(struct isl_basic_set *bset, int pos)
78 return isl_basic_map_div((struct isl_basic_map *)bset, pos);
81 __isl_give isl_div *isl_div_div(__isl_take isl_div *div, int pos)
86 bmap = isl_basic_map_copy(div->bmap);
88 return isl_basic_map_div(bmap, pos);
91 __isl_give isl_div *isl_div_alloc(__isl_take isl_space *dim)
93 struct isl_basic_map *bmap;
98 bmap = isl_basic_map_alloc_space(dim, 1, 0, 0);
102 isl_basic_map_alloc_div(bmap);
103 isl_seq_clr(bmap->div[0], 1 + 1 + isl_basic_map_total_dim(bmap));
104 return isl_basic_map_div(bmap, 0);
107 __isl_give isl_div *isl_div_copy(__isl_keep isl_div *div)
116 void isl_div_free(struct isl_div *c)
124 isl_basic_map_free(c->bmap);
125 isl_ctx_deref(c->ctx);
129 void isl_div_get_constant(struct isl_div *div, isl_int *v)
133 isl_int_set(*v, div->line[0][1]);
136 void isl_div_get_denominator(struct isl_div *div, isl_int *v)
140 isl_int_set(*v, div->line[0][0]);
143 void isl_div_get_coefficient(struct isl_div *div,
144 enum isl_dim_type type, int pos, isl_int *v)
149 isl_assert(div->ctx, pos < n(div, type), return);
150 isl_int_set(*v, div->line[0][offset(div, type) + pos]);
153 void isl_div_set_constant(struct isl_div *div, isl_int v)
157 isl_int_set(div->line[0][1], v);
160 void isl_div_set_denominator(struct isl_div *div, isl_int v)
164 isl_int_set(div->line[0][0], v);
167 void isl_div_set_coefficient(struct isl_div *div,
168 enum isl_dim_type type, int pos, isl_int v)
173 isl_assert(div->ctx, pos < n(div, type), return);
174 isl_int_set(div->line[0][offset(div, type) + pos], v);
177 __isl_give isl_aff *isl_aff_from_div(__isl_take isl_div *div)
185 pos = div->line - div->bmap->div;
186 aff = isl_aff_zero_on_domain(isl_basic_map_get_local_space(div->bmap));
187 aff = isl_aff_set_coefficient_si(aff, isl_dim_div, pos, 1);