Rob,

Adding -Duselongdouble seems to have fixed the problem. I suspect I shall have to spend more time trying to figure out exactly what 64-bit features I need and exactly how to get those and no others. But at least now I have a consistent, working build.

Thanks to you and everyone who contributed to the thread.

In reply to Re^3: 64-bit build fails numeric tests by eshafto
in thread 64-bit build fails numeric tests by eshafto

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