On Tuesday, 19 February 2013 at 14:03:54 UTC, monarch_dodra wrote:
Are there any plans that would allow using opEqual or opCmp
operators with simd?
My use case is that I have arrays, and I need to verify that
ALL the elements in my array are comprised between two values
(in this specific case 10 and 93).
I was hoping I would be able to use:
ubyte[] arr = ...
if (arr []< 10 || arr[]> 93) throw Exception();
But that doesn't seem to work.
Neither does simple opEqual comparison.
//Make sure arr is initialized to 0
if (arr[] != 0)
Is this a "never thought of this and not implemented" issue, or
is there a reason that simd can't do this? I find it strange,
since simd allows for straight up array to array opEquals, but
not array to value?
Simd comparison generally doesn't return a bool, it returns a
bool array,
one per element.
Does (arr[] < 10) mean "is every element in arr less than 10" OR
"is any element of arr less than 10" OR "create a bool array
which is true for each element which is less than 10" ?
All make sense. That's the problem.
