[LLVMdev] Optimize away sqrt in simple cases?

[Renato Golin]

On 24 April 2013 09:00, Reed Kotler <rkotler at mips.com> wrote:

> When you are debugging a calculator that's what you want.
>

I thought that most calculators used fixed-point or arbitrary precision
math...


Scientists using the math library want the math to be as close to real math
> as possible.
>

Scientists that don't understand FP well write bad scientific code.
Computers can't do math, sorry.

Relying on a supposedly identical sequence of FP operations to generate the
same output is one thing, relying on computers doing abstract math is a bit
of a jump...

I know of a few examples where well written crude models easily outperform
(in speed and quality) in-depth badly written models.

cheers,
--renato
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