From: Shiqi Zhang <shiqi@isrc.iscas.ac.cn>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: Richard Henderson <richard.henderson@linaro.org>,
libc-alpha@sourceware.org
Subject: Re: [PATCH v2] riscv: Add macros for FPUCW/fcsr in fpu_control.h
Date: Mon, 13 Feb 2023 18:17:14 +0800 [thread overview]
Message-ID: <101fcfa2-0ddf-99a5-1f2e-1a3b7fe0d73c@isrc.iscas.ac.cn> (raw)
In-Reply-To: <mvm4jrqufge.fsf@linux-m68k.org>
The fenv macro FE_TONEARESTFROMZERO doesn't exist yet and seems to
belong to a newer version of C standard draft. Maybe I should implement
that along with the macros in fpu_control.h?
I'm defining these macros here primarily because in most cases glibc is
the lowest layer of user programs. So I think it's the best place to
define these macros for directly interacting with arch-specific things
like FPU control, like other architectures have done.
At 2023/2/13 16:39, Andreas Schwab wrote:
> 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.
>
next prev parent reply other threads:[~2023-02-13 10:17 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-12 6:52 Shiqi Zhang
2023-02-12 19:36 ` Richard Henderson
2023-02-13 6:16 ` Shiqi Zhang
2023-02-13 8:39 ` Andreas Schwab
2023-02-13 10:17 ` Shiqi Zhang [this message]
2023-02-13 22:00 ` Joseph Myers
2023-02-13 18:17 ` Richard Henderson
2023-02-13 19:31 ` Shiqi Zhang
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