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    <p>See here: <a href="http://www.boost.org/doc/libs/1_41_0/libs/integer/integer_traits.html" rel="nofollow">http://www.boost.org/doc/libs/1_41_0/libs/integer/integer_traits.html</a></p> <p>Edit: Actually it's not giving you any information about the standard however you can get the min and max value on compile time for certain types.</p> <p>Edit2: According to your update I can suggest you to use <a href="http://www.boost.org/doc/libs/1_44_0/libs/mpl/doc/index.html" rel="nofollow">boost.mpl</a>, <a href="http://www.boost.org/doc/libs/1_44_0/libs/type_traits/doc/html/index.html" rel="nofollow">boost.type_traits</a>and the before mentioned <a href="http://www.boost.org/doc/libs/1_44_0/libs/integer/integer_traits.html" rel="nofollow">boost.integer_traits</a> library.</p> <p>Boost also provides a header called cstdint.hpp (part of the <a href="http://www.boost.org/doc/libs/1_44_0/libs/integer/doc/html/index.html" rel="nofollow">boost.integer</a> library) which defines types like boost::uint32_t or boost::int32_t which will ensure that you get a type which supports 32 Bits. (Of course also for 8, 16 and 64 Bits)</p> <p>With <a href="http://www.boost.org/doc/libs/1_44_0/libs/type_traits/doc/html/index.html" rel="nofollow">boost.type_traits</a> you can for example compare two types if they are equal. You'd be using <a href="http://www.boost.org/doc/libs/1_44_0/libs/type_traits/doc/html/boost_typetraits/reference/is_same.html" rel="nofollow">boost::is_same</a> for it.</p> <p>Boost MPL offers you compile time algorithms, to make conditions etc and integer traits will offer you a compile time way to get the limits for types.</p> <p>HTH</p>
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    1. POHow do I determine the number of bits in a template non-type integral constant parameter?
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    1. COI am already using boost.mpl. If it addresses my question, I haven't found it. The integer_traits library also appears to be useless to me, as the values produces are not integer constant expressions and so cannot be used in template math.
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    2. COboost::integer_traits<int>::const_min and boost::integer_traits<int>::const_max are definitely compile time constants. For [selecting between multiple types](http://www.boost.org/doc/libs/1_44_0/libs/mpl/doc/refmanual/type-selection.html) (or values however they are represented as types which contain a value in boost.mpl) or values [based on some conditions](http://www.boost.org/doc/libs/1_44_0/libs/mpl/doc/refmanual/comparisons.html) ( [including logical operations](http://www.boost.org/doc/libs/1_44_0/libs/mpl/doc/refmanual/logical-operations.html) ) boost.mpl fits beautifully.
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    3. COThere are also [bitwise operations and others see the list for the meta functions](http://www.boost.org/doc/libs/1_44_0/libs/mpl/doc/refmanual/metafunctions.html)
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