[Issue 18726] New: std.math.fma is not implemented

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18726

          Issue ID: 18726
           Summary: std.math.fma is not implemented
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: phobos
          Assignee: nobody at puremagic.com
          Reporter: jack at jackstouffer.com

fma can be correctly implemented for doubles and floats on all platforms.

in core.math fmal is not correctly implemented for almost any platform. Mostly
it just casts the reals to doubles.

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