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Added accessors to extract sign/exponent/significand BV numerals from FP numerals.

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This commit is contained in:
Christoph M. Wintersteiger 2016-09-16 16:48:22 +01:00
parent 5716eaafed
commit 6b474adc8a
7 changed files with 246 additions and 5 deletions
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97
src/api/api_fpa.cpp
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@ -909,6 +909,8 @@ extern "C" {
Z3_TRY;
LOG_Z3_fpa_get_numeral_sign(c, t, sgn);
RESET_ERROR_CODE();
CHECK_NON_NULL(t, 0);
CHECK_VALID_AST(t, 0);
ast_manager & m = mk_c(c)->m();
mpf_manager & mpfm = mk_c(c)->fpautil().fm();
fpa_decl_plugin * plugin = (fpa_decl_plugin*)m.get_plugin(mk_c(c)->get_fpa_fid());
@ -929,6 +931,101 @@ extern "C" {
Z3_CATCH_RETURN(0);
}
Z3_ast Z3_API Z3_fpa_get_numeral_sign_bv(Z3_context c, Z3_ast t) {
Z3_TRY;
LOG_Z3_fpa_get_numeral_sign_bv(c, t);
RESET_ERROR_CODE();
CHECK_NON_NULL(t, 0);
CHECK_VALID_AST(t, 0);
ast_manager & m = mk_c(c)->m();
mpf_manager & mpfm = mk_c(c)->fpautil().fm();
unsynch_mpq_manager & mpqm = mpfm.mpq_manager();
family_id fid = mk_c(c)->get_fpa_fid();
fpa_util & fu = mk_c(c)->fpautil();
api::context * ctx = mk_c(c);
expr * e = to_expr(t);
if (!is_app(e) ||
is_app_of(e, fid, OP_FPA_NAN)) {
SET_ERROR_CODE(Z3_INVALID_ARG);
RETURN_Z3(0);
}
if (is_app_of(e, fid, OP_FPA_PLUS_INF)) {
expr * r = ctx->bvutil().mk_numeral(0, 1);
ctx->save_ast_trail(r);
RETURN_Z3(of_expr(r));
}
if (is_app_of(e, fid, OP_FPA_MINUS_INF)) {
expr * r = ctx->bvutil().mk_numeral(1, 1);
ctx->save_ast_trail(r);
RETURN_Z3(of_expr(r));
}
if (!fu.is_fp(e)) {
SET_ERROR_CODE(Z3_INVALID_ARG);
RETURN_Z3(0);
}
app * a = to_app(e);
RETURN_Z3(of_expr(a->get_arg(0)));
Z3_CATCH_RETURN(0);
}
Z3_ast Z3_API Z3_fpa_get_numeral_exponent_bv(Z3_context c, Z3_ast t) {
Z3_TRY;
LOG_Z3_fpa_get_numeral_exponent_bv(c, t);
RESET_ERROR_CODE();
CHECK_NON_NULL(t, 0);
CHECK_VALID_AST(t, 0);
ast_manager & m = mk_c(c)->m();
mpf_manager & mpfm = mk_c(c)->fpautil().fm();
unsynch_mpq_manager & mpqm = mpfm.mpq_manager();
family_id fid = mk_c(c)->get_fpa_fid();
fpa_util & fu = mk_c(c)->fpautil();
expr * e = to_expr(t);
if (!is_app(e) ||
is_app_of(e, fid, OP_FPA_NAN) ||
is_app_of(e, fid, OP_FPA_PLUS_INF) ||
is_app_of(e, fid, OP_FPA_MINUS_INF)) {
SET_ERROR_CODE(Z3_INVALID_ARG);
RETURN_Z3(0);
}
if (!fu.is_fp(e)) {
SET_ERROR_CODE(Z3_INVALID_ARG);
RETURN_Z3(0);
}
api::context * ctx = mk_c(c);
app * a = to_app(e);
RETURN_Z3(of_expr(a->get_arg(1)));
Z3_CATCH_RETURN(0);
}
Z3_ast Z3_API Z3_fpa_get_numeral_significand_bv(Z3_context c, Z3_ast t) {
Z3_TRY;
LOG_Z3_fpa_get_numeral_significand_bv(c, t);
RESET_ERROR_CODE();
CHECK_NON_NULL(t, 0);
CHECK_VALID_AST(t, 0);
ast_manager & m = mk_c(c)->m();
mpf_manager & mpfm = mk_c(c)->fpautil().fm();
unsynch_mpq_manager & mpqm = mpfm.mpq_manager();
family_id fid = mk_c(c)->get_fpa_fid();
fpa_util & fu = mk_c(c)->fpautil();
expr * e = to_expr(t);
if (!is_app(e) ||
is_app_of(e, fid, OP_FPA_NAN) ||
is_app_of(e, fid, OP_FPA_PLUS_INF) ||
is_app_of(e, fid, OP_FPA_MINUS_INF)) {
SET_ERROR_CODE(Z3_INVALID_ARG);
RETURN_Z3(0);
}
if (!fu.is_fp(e)) {
SET_ERROR_CODE(Z3_INVALID_ARG);
RETURN_Z3(0);
}
api::context * ctx = mk_c(c);
app * a = to_app(e);
RETURN_Z3(of_expr(a->get_arg(2)));
Z3_CATCH_RETURN(0);
}
Z3_string Z3_API Z3_fpa_get_numeral_significand_string(Z3_context c, Z3_ast t) {
Z3_TRY;
LOG_Z3_fpa_get_numeral_significand_string(c, t);