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I think the documentation of the mmix -mknuthdiv option in the "MMIX
Options" node of the gcc manual could be clarified a little.
System: Linux blah 2.4.25-1-k6 #1 Tue Feb 24 13:18:52 EST 2004 i586 GNU/Linux
<machine, os, target, libraries (multiple lines)>
configured with: ../src/configure -v --enable-languages=c,c++,java,f77,pascal,objc,ada,treelang --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-gxx-include-dir=/usr/include/c++/3.3 --enable-shared --with-system-zlib --enable-nls --without-included-gettext --enable-__cxa_atexit --enable-clocale=gnu --enable-debug --enable-java-gc=boehm --enable-java-awt=xlib,gtk --enable-objc-gc i486-linux
If I understand the wording "Make the result of a division yielding a
remainder have the same sign as the divisor", -mknuthdiv is a "floor"
style division. I think it may be clearer to say that outright,
something like: ... "floor" style division, meaning quotient rounded
towards negative infinity and remainder therefore having the same sign
as the divisor.
Also, I think it would be worth noting that this style is contrary to
the C99 standard (sec 6.5.5 in a draft I'm looking at). I guess
either an explicit caution about (non)-conformance, or change the
wording "almost exclusively used" for -mno-knuthdiv to something