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I would like to propose that C++ get a mechanism by which the magical
ability of std::complex<T> * to be reinterpret_cast to T * could be allowed
for other classes.

A simple case of this is a vector4 type:

struct vector3 { float x; float y; float z; float w; };

The performance difference is strong enough that our project actually gets
a much larger performance *increase* from using -fno-strict-aliasing versus
-fstrict-aliasing with the changes required for compliance.

Melissa

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<div dir=3D"ltr">I would like to propose that C++ get a mechanism by which =
the magical ability of std::complex&lt;T&gt; * to be reinterpret_cast to T =
* could be allowed for other classes.<br><br>A simple case of this is a vec=
tor4 type:<br><br>struct vector3 { float x; float y; float z; float w; };<b=
r><br>The performance difference is strong enough that our project actually=
 gets a much larger performance <i>increase</i> from using -fno-strict-alia=
sing versus -fstrict-aliasing with the changes required for compliance.<br>=
<br>Melissa<br></div>

<p></p>

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..org">std-proposals@isocpp.org</a>.<br />
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om/a/isocpp.org/d/msgid/std-proposals/a3462649-a7bd-4215-b162-e8fe922df02d%=
40isocpp.org?utm_medium=3Demail&utm_source=3Dfooter">https://groups.google.=
com/a/isocpp.org/d/msgid/std-proposals/a3462649-a7bd-4215-b162-e8fe922df02d=
%40isocpp.org</a>.<br />

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