[J3] New reference BLAS NRM2 routines

[Robert Corbett]

I still find the authors' claim dubious.
They claim adding the option fp:precise fixed the problem.
Would the option fp:precise make
the compiler respect parentheses?

Robert Corbett

> On Oct 9, 2018, at 6:38 AM, Steve Lionel via J3 <j3 at mailman.j3-fortran.org> wrote:
> 
>> On 10/9/2018 7:52 AM, Robert Corbett via J3 wrote:
>> The article does not
>> give enough information to allow
>> a reader to check the authors'
>> assertion that the Intel compiler
>> does not honor parentheses in
>> optimizations.
> 
> But indeed the Intel compiler doesn't, unless the option -assume protect_parens is supplied. There was a lot of debate on this topic among the Intel teams. The -standard-semantics option, which turns on a number of behaviors whose defaults differ from the standard, includes this.
> 
> Steve
>