On Wednesday, 2 September 2015 at 11:03:00 UTC, ponce wrote:
On Tuesday, 1 September 2015 at 23:06:50 UTC, John Carter wrote:
C/C++ discussion here....
http://blog.robertelder.org/signed-or-unsigned-part-2/
D rules here...
http://dlang.org/type.html#integer-promotions
Everything Bjarne said still applies equally to D code, since
integer promotion is identical with C from what I understand.
Hmm. What Robert Elder says also applies still. And in my world
his argument about undefined behavior carries weight.
Bugs that emerge from different optimizations / different
versions of the compiler / on different CPU's are nightmares in
my domain.
Here is a bug that existed in the JDK for 9 years (and probably
in many other places....)
http://googleresearch.blogspot.co.nz/2006/06/extra-extra-read-all-about-it-nearly.html
So given the advice on mixing unsigned and signed, and the
complexity of Dominikus's code to get signed and unsigned code to
compare sanely....
Maybe if his code becomes standard in D...
Yup, mixing signed and unsigned is A Bad Thing, and you best go
with whatever your base libraries give you.
The whole problem....
http://www.di.unipi.it/~ruggieri/Papers/semisum.pdf
...makes me feel vaguely ill and long for a Numerical Tower.
I really must get around to benchmarking BigInt....
