I suspected the same, most of the CPUs support fast floating
point operations anyway (with FPUs), shouldn't take a lot more
time than doing integer arithmetic. Unless we are targeting 8bit
avr or something similar.
And precision argument doesn't seem strong either, since, which
is more precise 3/7 = 0 or 0.4285 ?
I am not suggesting we change the promotion rules now, most
likely never going to happen. But I am trying to find a good
rationale for the existing rules and unable to find a good one.
On Wednesday, 7 September 2016 at 05:31:08 UTC, Daniel Kozak
wrote:
Dne 6.9.2016 v 22:51 deadalnix via Digitalmars-d napsal(a):
On Tuesday, 6 September 2016 at 07:52:47 UTC, Daniel Kozak
wrote:
No, it is really important rule. If there will be automatic
promotion to float for auto it will hurt performance
in cases when you want int and it will break things.
The performance have nothing to do with it. In fact float
division is way faster than integer division, try it. It is
all about correctness. Integer and floating point division
have different semantic.
You are right, on my pc speed is same, but I am remember that
there has been some performance problems last time i checked
(something about only one FPU on my bulldozer cpu)
