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FPA: added is_nan

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Signed-off-by: Christoph M. Wintersteiger <cwinter@microsoft.com>
This commit is contained in:
Christoph M. Wintersteiger 2013-06-07 18:34:31 +01:00
parent d7639557d2
commit 455618bb2b
7 changed files with 24 additions and 0 deletions
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11
src/ast/rewriter/float_rewriter.cpp
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@ -58,6 +58,7 @@ br_status float_rewriter::mk_app_core(func_decl * f, unsigned num_args, expr * c
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;
@ -431,6 +432,16 @@ br_status float_rewriter::mk_is_pzero(expr * arg1, expr_ref & result) {
return BR_FAILED;
}
br_status float_rewriter::mk_is_nan(expr * arg1, expr_ref & result) {
scoped_mpf v(m_util.fm());
if (m_util.is_value(arg1, v)) {
result = (m_util.fm().is_nan(v)) ? m().mk_true() : m().mk_false();
return BR_DONE;
}
return BR_FAILED;
}
br_status float_rewriter::mk_is_inf(expr * arg1, expr_ref & result) {
scoped_mpf v(m_util.fm());
if (m_util.is_value(arg1, v)) {

1
src/ast/rewriter/float_rewriter.h
View file

@ -66,6 +66,7 @@ public:
br_status mk_is_zero(expr * arg1, expr_ref & result);
br_status mk_is_nzero(expr * arg1, expr_ref & result);
br_status mk_is_pzero(expr * arg1, expr_ref & result);
br_status mk_is_nan(expr * arg1, expr_ref & result);
br_status mk_is_inf(expr * arg1, expr_ref & result);
br_status mk_is_normal(expr * arg1, expr_ref & result);
br_status mk_is_subnormal(expr * arg1, expr_ref & result);