I find it odd that a 64-bit build uses double-precision numbers, but I don't know if that's unusual or wrong

Looking at the INSTALL file that ships with the perl source, it appears that -Duse64bitall switches on 64 bit ints and longs, and the use of 64bit pointers ... but doesn't switch on -Duselongdouble. If you want the extra precision that -Duselongdouble provides it seems that you have to specify either -Duselongdouble or -Dusemorebits.

It could be interesting to know if there were any compiler flags (other than the ones already stated) specified by the OP.

Cheers,
Rob

In reply to Re^2: 64-bit build fails numeric tests by syphilis
in thread 64-bit build fails numeric tests by eshafto

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