[issue24974] ICC on Windows 8.1: _decimal fails to compile with default fp model

[Stefan Krah]

Stefan Krah added the comment:

If "#pragma float_control(precise, push)" is exactly the MSVC default
then I'm fine with putting it on top of FENV_ACCESS.

There's nothing speed sensitive going on here: In the 32-bit build
the x87 FPU is used for modular multiplication of integers and needs
the control word set to 80-bit prec + ROUND_CHOP.

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