Questions tagged [tribool]
6 questions
6
votes
4 answers
C++ library with support for 3-valued logic: 0,1,X
I am working on a simulator for a microprocessor, written in C++.
I am looking for a way to model state elements in the hardware that have just been powered up and have not yet been reset in any way. A real state element would have an unknown value…
Nathan Fellman
- 122,701
- 101
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6
votes
1 answer
Boost::tribool: odd behaviour, or bug?
I'm exploring boost::tribool and was surprised by the following behaviour.
{
using namespace boost;
boost::tribool t(indeterminate);
assert(t==indeterminate); // This assertion fails!
}
However, if I do this, the assert…
Roddy
- 66,617
- 42
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3
votes
2 answers
Boost tribool usage
That is my sample of testing boost::tribool:
#include
#include "boost/logic/tribool.hpp"
int main()
{
boost::logic::tribool init;
//init = boost::logic::indeterminate;
init = true;
//init = false;
if…
Space Rabbit
- 141
- 2
- 11
2
votes
1 answer
Does C++11 or C++14 support three or multiple valued logic?
I am wondering if C++11 or C++14 supports three or multiple valued logic. If not, any existing library does it?
user1899020
- 13,167
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2
votes
1 answer
c++ boost tribool ternary operator wrong value
Boost 1.55, MSVC express 2012.
Wrong expression evaluation with tribool.
It works correct only when I specify tribool(false) explicitly.
Moral of the story: compiler chooses TYPES based on VALUES.
auto a = 0? indeterminate : false; // type function…
toby_toby_toby
- 103
- 1
- 10
0
votes
0 answers
Enum constant in boolean context
I am new to C++ and I am trying to install the pybeesgrid package (https://github.com/berleon/pybeesgrid). In this specifc part of the pybeesgrid.cpp file:
void buildGridsFromNpArrWorkFn(
PyArrayObject * bits_and_config_ptr,
PyObject…
Natalia Sá
- 13
- 2