Why not extend array operations to full Fortran90 power ?
simen.kjaras at gmail.com
Wed Nov 16 13:48:00 PST 2011
On Wed, 16 Nov 2011 22:31:31 +0100, Xinok <xinok at live.com> wrote:
> On 11/16/2011 2:08 PM, Joachim Wuttke <j.wuttke at fz-juelich.de> wrote:
>> (1) Y = X*X;
>> (2) Y = sin( X );
>> With gdc 4.4.6,
>> (1) compiles and executes as I expected, whereas
>> (2) is not allowed (fails at compile time).
>> The semantics of (2) is unambiguous,
>> and it works perfectly well in Fortran90.
>> Allowing (2) would make D really attractive
>> for formula-heavy mathematical work.
>> - Joachim
> I think vector operations are designed to avoid turning them into loops.
> In (2), this would require several calls to sin().
Really? How would you do Y = X * X without a loop?
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