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https://github.com/boostorg/safe_numerics.git
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bce3a5536e
passes all tests adds documentation of library internals implements trap_exception for compile time guarantee for program correctness still needs update to support the above for operations in addition to + and -
64 lines
1.4 KiB
C++
64 lines
1.4 KiB
C++
#ifndef BOOST_NUMERIC_EXCEPTION
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#define BOOST_NUMERIC_EXCEPTION
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER) && (_MSC_VER >= 1020)
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# pragma once
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#endif
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// Copyright (c) 2012 Robert Ramey
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// contains operations for doing checked aritmetic on NATIVE
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// C++ types.
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#include "concept/exception_policy.hpp"
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namespace boost {
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namespace numeric {
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enum class exception_type {
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no_exception,
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overflow_error,
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underflow_error,
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range_error,
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domain_error,
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uninitialized
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};
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template<class EP>
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constexpr void
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dispatch(const exception_type & e, char const * const msg){
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switch(e){
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case exception_type::overflow_error:
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EP::overflow_error(msg);
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break;
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case exception_type::underflow_error:
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EP::underflow_error(msg);
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break;
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case exception_type::range_error:
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EP::range_error(msg);
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break;
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case exception_type::domain_error:
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EP::domain_error(msg);
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break;
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case exception_type::uninitialized:
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EP::domain_error(msg);
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break;
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case exception_type::no_exception:
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EP::no_error(msg);
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break;
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default:
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assert(false);
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break;
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}
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}
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} // numeric
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} // boost
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#endif // BOOST_NUMERIC_CHECKED_RESULT
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