isl_tab_pip.c: propagate some equalities from gbr context to main tableau
[isl.git] / isl_ctx.c
blob66e3c6b94b6022988c246bb76216713abdff0120
1 #include "isl_ctx.h"
2 #include "isl_vec.h"
3 #ifdef ISL_POLYLIB
4 #include <polylib/polylibgmp.h>
5 #endif
7 struct isl_ctx *isl_ctx_alloc()
9 struct isl_ctx *ctx = NULL;
11 ctx = isl_calloc_type(NULL, struct isl_ctx);
12 if (!ctx)
13 goto error;
15 if (isl_hash_table_init(ctx, &ctx->name_hash, 0))
16 goto error;
18 ctx->stats = isl_calloc_type(ctx, struct isl_stats);
19 if (!ctx->stats)
20 goto error;
22 ctx->ref = 0;
24 isl_int_init(ctx->one);
25 isl_int_set_si(ctx->one, 1);
27 isl_int_init(ctx->negone);
28 isl_int_set_si(ctx->negone, -1);
30 isl_int_init(ctx->normalize_gcd);
32 ctx->n_cached = 0;
34 #ifdef ISL_POLYLIB
35 ctx->MaxRays = POL_NO_DUAL | POL_INTEGER;
36 #endif
38 ctx->lp_solver = ISL_LP_TAB;
39 ctx->ilp_solver = ISL_ILP_GBR;
40 ctx->pip = ISL_PIP_TAB;
41 ctx->context = ISL_CONTEXT_GBR;
43 ctx->gbr = ISL_GBR_ONCE;
44 ctx->gbr_only_first = 0;
46 return ctx;
47 error:
48 free(ctx);
49 return NULL;
52 void isl_ctx_ref(struct isl_ctx *ctx)
54 ctx->ref++;
57 void isl_ctx_deref(struct isl_ctx *ctx)
59 isl_assert(ctx, ctx->ref > 0, return);
60 ctx->ref--;
63 void isl_ctx_free(struct isl_ctx *ctx)
65 if (!ctx)
66 return;
67 isl_assert(ctx, ctx->ref == 0, return);
68 isl_hash_table_clear(&ctx->name_hash);
69 isl_blk_clear_cache(ctx);
70 isl_int_clear(ctx->one);
71 isl_int_clear(ctx->negone);
72 isl_int_clear(ctx->normalize_gcd);
73 free(ctx->stats);
74 free(ctx);