boost::xint::options Namespace Reference

Options for the integer_t template are stored in this namespace. More...

Classes
struct	copy_on_write
	Allows faster operations, at a price. More...
struct	fixedlength
	Make fixed-length integers. More...
struct	negative_absolute
	Creates an integer type that forces any negative number to its absolute value. More...
struct	negative_allowed
	Creates a signed integer type. More...
struct	negative_exception
	Creates an integer type that considers unsigned values invalid. More...
struct	negative_modulus
	Make a fixedlength integer wrap like a built-in unsigned type. More...
struct	negative_not_allowed
	Creates an unsigned integer with the most common negative-value handling. More...
struct	negative_zero
	Creates an integer type that forces any negative number to zero. More...
struct	nothrow
	Disables exceptions from the library. More...
struct	secure
	Zeros memory before deallocating. More...
struct	threadsafe
	Ensures that the integer_t objects can be safely used by multiple threads. More...

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Detailed Description

Options for the integer_t template are stored in this namespace.

Thanks to the magic of Boost.Parameter, you can use as few or as many options as you need, and in any order.

There are several options for an unsigned type, which not only tell the library to make the type unsigned, but also what to do if a calculation would result in a negative number. You can only use one of them in a specific integer_t. If none of them are specified, the default is a signed type.

In addition to these options, you can also specify an allocator, which is just passed to the integer_t template directly. If specified, it must be for the boost::xint::detail::digit_t type. Defaults to std::allocator<digit_t>, the standard allocator provided by the STL.