[Issue 18571] New: log for Complex

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18571

          Issue ID: 18571
           Summary: log for Complex
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: phobos
          Assignee: nobody at puremagic.com
          Reporter: jscaux at gmail.com

std.complex lacks a function returning the log of a Complex.

This is essential for many types of scientific computations. One can write a
workaround easily, but it would be nicer to have this as part of the standard
library.

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