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Date: Wed, 26 Jun 2024 06:36:09 -0400
From: enh <>
To: Rich Felker <>
Subject: Re: roundf() (and round(), and ...)

On Tue, Jun 25, 2024 at 7:35 PM Rich Felker <> wrote:
> On Tue, Jun 25, 2024 at 06:28:52PM -0400, enh wrote:
> > i don't know about gcc, but iirc for clang you don't even need to do
> > that. it assumes it knows what various functions mean, and inlines
> > trivial stuff like this anyway...
> Not with -ffreestanding. If it does that with -ffreestanding, it's a
> bug.

no, but my point is that most of your _users_ will never see the libm
functions anyway. (at least not on architectures new enough that their
fp instructions are basically "we went through <math.h> and added an
instruction for everything that was easy", like arm64 or riscv64.)

> Rich

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