[Issue 18570] exp function does not work correctly for real in 64bit Windows

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18570

--- Comment #2 from Răzvan Ștefănescu <rumbu at rumbu.ro> ---
See also:

https://issues.dlang.org/show_bug.cgi?id=18326

https://issues.dlang.org/show_bug.cgi?id=9297

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