Пример #1
0
br_status float_rewriter::mk_app_core(func_decl * f, unsigned num_args, expr * const * args, expr_ref & result) {
    br_status st = BR_FAILED;
    SASSERT(f->get_family_id() == get_fid());
    switch (f->get_decl_kind()) {
    case OP_TO_FLOAT:        st = mk_to_fp(f, num_args, args, result); break;
    case OP_FLOAT_ADD:       SASSERT(num_args == 3); st = mk_add(args[0], args[1], args[2], result); break;
    case OP_FLOAT_SUB:       SASSERT(num_args == 3); st = mk_sub(args[0], args[1], args[2], result); break;
    case OP_FLOAT_NEG:       SASSERT(num_args == 1); st = mk_neg(args[0], result); break;
    case OP_FLOAT_MUL:       SASSERT(num_args == 3); st = mk_mul(args[0], args[1], args[2], result); break;
    case OP_FLOAT_DIV:       SASSERT(num_args == 3); st = mk_div(args[0], args[1], args[2], result); break;
    case OP_FLOAT_REM:       SASSERT(num_args == 2); st = mk_rem(args[0], args[1], result); break;
    case OP_FLOAT_ABS:       SASSERT(num_args == 1); st = mk_abs(args[0], result); break;
    case OP_FLOAT_MIN:       SASSERT(num_args == 2); st = mk_min(args[0], args[1], result); break;
    case OP_FLOAT_MAX:       SASSERT(num_args == 2); st = mk_max(args[0], args[1], result); break;
    case OP_FLOAT_FMA:       SASSERT(num_args == 4); st = mk_fma(args[0], args[1], args[2], args[3], result); break;
    case OP_FLOAT_SQRT:      SASSERT(num_args == 2); st = mk_sqrt(args[0], args[1], result); break;
    case OP_FLOAT_ROUND_TO_INTEGRAL: SASSERT(num_args == 2); st = mk_round(args[0], args[1], result); break;

    case OP_FLOAT_EQ:        SASSERT(num_args == 2); st = mk_float_eq(args[0], args[1], result); break; 
    case OP_FLOAT_LT:        SASSERT(num_args == 2); st = mk_lt(args[0], args[1], result); break;
    case OP_FLOAT_GT:        SASSERT(num_args == 2); st = mk_gt(args[0], args[1], result); break;
    case OP_FLOAT_LE:        SASSERT(num_args == 2); st = mk_le(args[0], args[1], result); break;
    case OP_FLOAT_GE:        SASSERT(num_args == 2); st = mk_ge(args[0], args[1], result); break;
    case OP_FLOAT_IS_ZERO:   SASSERT(num_args == 1); st = mk_is_zero(args[0], result); break;
    case OP_FLOAT_IS_NZERO:  SASSERT(num_args == 1); st = mk_is_nzero(args[0], result); break;
    case OP_FLOAT_IS_PZERO:  SASSERT(num_args == 1); st = mk_is_pzero(args[0], result); break;
    case OP_FLOAT_IS_NAN:    SASSERT(num_args == 1); st = mk_is_nan(args[0], result); break;
    case OP_FLOAT_IS_INF:    SASSERT(num_args == 1); st = mk_is_inf(args[0], result); break;
    case OP_FLOAT_IS_NORMAL: SASSERT(num_args == 1); st = mk_is_normal(args[0], result); break;
    case OP_FLOAT_IS_SUBNORMAL: SASSERT(num_args == 1); st = mk_is_subnormal(args[0], result); break;
    case OP_FLOAT_IS_NEGATIVE: SASSERT(num_args == 1); st = mk_is_negative(args[0], result); break;
    case OP_FLOAT_IS_POSITIVE: SASSERT(num_args == 1); st = mk_is_positive(args[0], result); break;
    case OP_FLOAT_TO_IEEE_BV: SASSERT(num_args == 1); st = mk_to_ieee_bv(args[0], result); break;
    case OP_FLOAT_FP:        SASSERT(num_args == 3); st = mk_fp(args[0], args[1], args[2], result); break;
    case OP_FLOAT_TO_UBV:    SASSERT(num_args == 2); st = mk_to_ubv(args[0], args[1], result); break;
    case OP_FLOAT_TO_SBV:    SASSERT(num_args == 2); st = mk_to_sbv(args[0], args[1], result); break;
    case OP_FLOAT_TO_REAL:   SASSERT(num_args == 1); st = mk_to_real(args[0], result); break;
    }
    return st;
}
Пример #2
0
br_status fpa_rewriter::mk_app_core(func_decl * f, unsigned num_args, expr * const * args, expr_ref & result) {
    br_status st = BR_FAILED;
    SASSERT(f->get_family_id() == get_fid());
    fpa_op_kind k = (fpa_op_kind)f->get_decl_kind();
    switch (k) {
    case OP_FPA_RM_NEAREST_TIES_TO_EVEN:
    case OP_FPA_RM_NEAREST_TIES_TO_AWAY:
    case OP_FPA_RM_TOWARD_POSITIVE:
    case OP_FPA_RM_TOWARD_NEGATIVE:
    case OP_FPA_RM_TOWARD_ZERO:
        SASSERT(num_args == 0); result = m().mk_app(f, (expr * const *)0); st = BR_DONE; break;

    case OP_FPA_PLUS_INF:
    case OP_FPA_MINUS_INF:
    case OP_FPA_NAN:
    case OP_FPA_PLUS_ZERO:
    case OP_FPA_MINUS_ZERO:
        SASSERT(num_args == 0); result = m().mk_app(f, (expr * const *)0); st = BR_DONE; break;

    case OP_FPA_NUM:
        SASSERT(num_args == 0); result = m().mk_app(f, (expr * const *)0); st = BR_DONE; break;

    case OP_FPA_ADD:       SASSERT(num_args == 3); st = mk_add(args[0], args[1], args[2], result); break;
    case OP_FPA_SUB:       SASSERT(num_args == 3); st = mk_sub(args[0], args[1], args[2], result); break;
    case OP_FPA_NEG:       SASSERT(num_args == 1); st = mk_neg(args[0], result); break;
    case OP_FPA_MUL:       SASSERT(num_args == 3); st = mk_mul(args[0], args[1], args[2], result); break;
    case OP_FPA_DIV:       SASSERT(num_args == 3); st = mk_div(args[0], args[1], args[2], result); break;
    case OP_FPA_REM:       SASSERT(num_args == 2); st = mk_rem(args[0], args[1], result); break;
    case OP_FPA_ABS:       SASSERT(num_args == 1); st = mk_abs(args[0], result); break;
    case OP_FPA_MIN:       SASSERT(num_args == 2); st = mk_min(args[0], args[1], result); break;
    case OP_FPA_MAX:       SASSERT(num_args == 2); st = mk_max(args[0], args[1], result); break;
    case OP_FPA_FMA:       SASSERT(num_args == 4); st = mk_fma(args[0], args[1], args[2], args[3], result); break;
    case OP_FPA_SQRT:      SASSERT(num_args == 2); st = mk_sqrt(args[0], args[1], result); break;
    case OP_FPA_ROUND_TO_INTEGRAL: SASSERT(num_args == 2); st = mk_round_to_integral(args[0], args[1], result); break;

    case OP_FPA_EQ:        SASSERT(num_args == 2); st = mk_float_eq(args[0], args[1], result); break;
    case OP_FPA_LT:        SASSERT(num_args == 2); st = mk_lt(args[0], args[1], result); break;
    case OP_FPA_GT:        SASSERT(num_args == 2); st = mk_gt(args[0], args[1], result); break;
    case OP_FPA_LE:        SASSERT(num_args == 2); st = mk_le(args[0], args[1], result); break;
    case OP_FPA_GE:        SASSERT(num_args == 2); st = mk_ge(args[0], args[1], result); break;
    case OP_FPA_IS_ZERO:   SASSERT(num_args == 1); st = mk_is_zero(args[0], result); break;
    case OP_FPA_IS_NAN:    SASSERT(num_args == 1); st = mk_is_nan(args[0], result); break;
    case OP_FPA_IS_INF:    SASSERT(num_args == 1); st = mk_is_inf(args[0], result); break;
    case OP_FPA_IS_NORMAL: SASSERT(num_args == 1); st = mk_is_normal(args[0], result); break;
    case OP_FPA_IS_SUBNORMAL: SASSERT(num_args == 1); st = mk_is_subnormal(args[0], result); break;
    case OP_FPA_IS_NEGATIVE: SASSERT(num_args == 1); st = mk_is_negative(args[0], result); break;
    case OP_FPA_IS_POSITIVE: SASSERT(num_args == 1); st = mk_is_positive(args[0], result); break;

    case OP_FPA_FP:        SASSERT(num_args == 3); st = mk_fp(args[0], args[1], args[2], result); break;
    case OP_FPA_TO_FP:     st = mk_to_fp(f, num_args, args, result); break;
    case OP_FPA_TO_FP_UNSIGNED: SASSERT(num_args == 2); st = mk_to_fp_unsigned(f, args[0], args[1], result); break;
    case OP_FPA_TO_UBV:    SASSERT(num_args == 2); st = mk_to_ubv(f, args[0], args[1], result); break;
    case OP_FPA_TO_SBV:    SASSERT(num_args == 2); st = mk_to_sbv(f, args[0], args[1], result); break;
    case OP_FPA_TO_IEEE_BV: SASSERT(num_args == 1); st = mk_to_ieee_bv(f, args[0], result); break;
    case OP_FPA_TO_REAL:   SASSERT(num_args == 1); st = mk_to_real(args[0], result); break;

    case OP_FPA_INTERNAL_MIN_I:
    case OP_FPA_INTERNAL_MAX_I:
    case OP_FPA_INTERNAL_MIN_UNSPECIFIED:
    case OP_FPA_INTERNAL_MAX_UNSPECIFIED:
        SASSERT(num_args == 2); st = BR_FAILED; break;

    case OP_FPA_INTERNAL_RM:
        SASSERT(num_args == 1); st = mk_rm(args[0], result); break;
    case OP_FPA_INTERNAL_TO_UBV_UNSPECIFIED:
        SASSERT(num_args == 0); st = mk_to_ubv_unspecified(f, result); break;
    case OP_FPA_INTERNAL_TO_SBV_UNSPECIFIED:
        SASSERT(num_args == 0); st = mk_to_sbv_unspecified(f, result); break;
    case OP_FPA_INTERNAL_TO_REAL_UNSPECIFIED:
        SASSERT(num_args == 0); st = mk_to_real_unspecified(result); break;

    case OP_FPA_INTERNAL_BVWRAP:
    case OP_FPA_INTERNAL_BVUNWRAP:
        st = BR_FAILED;
        break;

    default:
        NOT_IMPLEMENTED_YET();
    }
    return st;
}
Пример #3
0
    unsigned bvsize = Z3_get_bv_sort_size(ctx, bv);
    unsigned sz = is_signed ? bvsize - 1 : bvsize;
    rational max_bound = power(rational(2), sz);
    --max_bound;
    return Z3_mk_numeral(ctx, max_bound.to_string().c_str(), bv);
}

void test_add(unsigned bvsize, bool is_signed) {

    TRACE("no_overflow", tout << "test_add: bvsize = " << bvsize << ", is_signed = " << is_signed << "\n";);

    Z3_config cfg = Z3_mk_config();
    Z3_context ctx = Z3_mk_context(cfg);
    Z3_sort bv = Z3_mk_bv_sort(ctx, bvsize);

    Z3_ast min = mk_min(ctx, bv, is_signed);
    Z3_ast max = mk_max(ctx, bv, is_signed);
    Z3_ast t1;
    Z3_ast t2;
    Z3_ast test_ovfl;
    Z3_ast test_udfl;

    t1 = Z3_mk_const(ctx, Z3_mk_string_symbol(ctx,"x"), bv);
    t2 = Z3_mk_const(ctx, Z3_mk_string_symbol(ctx,"y"), bv);
    test_ovfl = Z3_mk_bvadd_no_overflow(ctx, t1, t2, is_signed);
    test_udfl = is_signed ? Z3_mk_bvadd_no_underflow(ctx, t1, t2) : NULL;

    Z3_push(ctx);
    Z3_assert_cnstr(ctx, Z3_mk_eq(ctx, t1, Z3_mk_numeral(ctx, "0", bv)));
    Z3_assert_cnstr(ctx, Z3_mk_eq(ctx, t2, Z3_mk_numeral(ctx, "1", bv)));
    TEST_NO_OVERFLOW;