Exotic architectures the standards committees care about

Question

I know that the C and C++ standards leave many aspects of the language implementation-defined just because if there is an architecture with other characteristics, it would b

Answer 1

Take a look at this one

Unisys ClearPath Dorado Servers

offering backward compatibility for people who have not yet migrated all their Univac software.

Key points:

• 36-bit words
• CHAR_BIT == 9
• one's complement
• 72-bit non-IEEE floating point
• separate address space for code and data
• word-addressed
• no dedicated stack pointer

Don't know if they offer a C++ compiler though, but they could.

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And now a link to a recent edition of their C manual has surfaced:

Unisys C Compiler Programming Reference Manual

Section 4.5 has a table of data types with 9, 18, 36, and 72 bits.