[PATCH v2] riscv: Add macros for FPUCW/fcsr in fpu_control.h

[Andreas Schwab]

On Feb 13 2023, Shiqi Zhang wrote:

> The rounding mode RMM (Round to Nearest, ties to Max Magnitude) of
> RISC-V isn't part of the C standard.

Doesn't that match FE_TONEARESTFROMZERO?  In any case, an implementation
may add additional FE_ macros.

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Andreas Schwab, schwab@linux-m68k.org
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