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  1. January 14th, 2009, 03:55 AM #1
    JohnW@Wessex's Avatar
    JohnW@Wessex
    JohnW@Wessex is offline Elite Member
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    STL TR1 type_traits surprises

    On using the new TR1 type_traits I was surprised to find that floating point numbers fail the is_signed test. This was not what I expected, seeing as floating point numbers do negative numbers quite well. It seems that this test only applies to integral types.

    Has anyone else come across a type trait test that did not do what they initially expected?
    "It doesn't matter how beautiful your theory is, it doesn't matter how smart you are. If it doesn't agree with experiment, it's wrong."
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  2. January 14th, 2009, 04:15 AM #2
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    Graham
    Graham is offline Elite Member Power Poster
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    Re: STL TR1 type_traits surprises

    Possibly it simply means that there are no "signed/unsigned" variants of the type. As in, you can't have "unsigned float" as a type.
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