namespace and include

Is it safe to do this?

Code:

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namespace std {
#include "math.h"
}

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Thanks in advance.

Quote:

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Originally Posted by audinue

Is it safe to do this?

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Adding declarations or definitions to the std namespace (or namespaces inside of it), other than certain template specialisations, results in undefined behaviour. Just #include <cmath> instead.

However cmath's round, etc isn't std.

Quote:

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Originally Posted by audinue

However cmath's round, etc isn't std.

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hmm... that is true. It looks like what C99 added to <math.h> will be included in the next version of the C++ standard for <cmath>, but for now you should accept that they are not in the std namespace.

N.. Next version.. (>.<)

Ah well, make a hack. Make your "manual" std namespace and fill it in with the missing prototypes.