[Issue 18627] std.complex is a lot slower than builtin complex types at number crunching

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18627

--- Comment #5 from ponce <aliloko at gmail.com> ---
Division with DMD 32-bit:

With cfloat: 1 minute, 18 secs, 451 ms, 932 ╬╝s, and 9 hnsecs
With cdouble: 1 minute, 19 secs, 747 ms, 70 ╬╝s, and 5 hnsecs
With Complex!float: 27 secs, 412 ms, 926 ╬╝s, and 5 hnsecs
With Complex!double: 25 secs, 39 ms, 159 ╬╝s, and 2 hnsecs

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