double vs real

[Shriramana Sharma]

Hello. I like that D exposes to me the real type to maximally utilize
the machine's numerical precision. Since I am writing a program
(currently in C++ but I am thinking of moving to D) that has to handle
lots of fractional numbers (calculating offset curves and such) I am
wondering whether/when I should real instead of double or even any
arguments in favour of staying with double (compatibility with
C/C++?). Any pointers appreciated please? I checked the FAQ but it
doesn't seem to mention this.

Thanks!

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Shriramana Sharma ஶ்ரீரமணஶர்மா श्रीरमणशर्मा