On Thu, Jan 13, 2022 at 1:25 AM Nikolay Nikolov via fpc-devel < fpc-devel@lists.freepascal.org> wrote:
> We do care about scientific code as well as fast code, that's why we > support both the FPU and SSE2+ (as well as AVX, etc.). > FPC *chooses *not to generate x87 FPU instructions on 64-bit Windows solely because "it's deprecated". There's no actual technical limitation in play for user-mode code as far as the OS support for it goes. On Thu, Jan 13, 2022 at 1:25 AM Nikolay Nikolov via fpc-devel < fpc-devel@lists.freepascal.org> wrote: > Floating point precision bugs, caused by loss of precision are evil, > because the code works most of the time during testing, but they can still > cause intermittent faults, which can be catastrophic. Ariane 5 is a notable > example. > I don't disagree with you, but you're missing my point, which is that there's trivial solutions for this other than mandating the use of an entirely 32-bit bit toolchain even for the common user who just wants to use a 64-bit toolchain to generate 64-bit applications on their own 64-bit operating system. Simply dropping a 32-bit copy of ppc386.exe into the bin folder of an otherwise all-64-bit FPC installation is all that's needed be able to build the 32-bit RTL and packages, and then start building 32-bit programs, for example.
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