Re: Cray style vectors

Anton Ertl <anton@mips.complang.tuwien.ac.at> schrieb:

Michael S <already5chosen@yahoo.com> writes:

As discussed here just recently, there are good reason to avoid
'unsigned' array indices in performance-oriented programs running under
IL32P64 or I32LP64 C environments. Everything else is preferable -
int, ptrdiff_t, size_t.

>
If Fortran makes unsigned overflow illegal, Fortran compilers can
perform the same shenanigans for unsigned that C compilers do for
signed integers; so if signed int really is preferable because of
these shenanigans, unsigned with the same shenanigans would be
preferable, too.

One problem is that, without 2^n modulo, something like a
multiplicative hash would be illegal.

People would do it anyway, ignoring the prohibition, because it
is so useful, and subsequent hilarity will ensue.