Julia can do it, too. ~~~ julia> sum_kbn([1.0e10, 1.0e-10, -1.0e10]) 1.0e-10 ~~~ The source code is https://github.com/JuliaLang/julia/blob/master/base/reduce.jl . t-nissie (Takeshi Nishimatsu)
A quick hack. * Elongation (or reallocation) of the array of partials[] when nn exeeds NUM_PARTIALS. * Tests. * Name of this algorithm. Kahan-Babuska-Neumaier? are required. ~~~ diff diff --git a/array.c b/array.c index b99a...t-nissie (Takeshi Nishimatsu)
I could not find any document describing how to use TEST_COLORS environment variable in Ruby. I could change the color of messages with `./configure TEST_COLORS=skip=43` and it finished successfully. However, after that, `make` result...t-nissie (Takeshi Nishimatsu)
FYI, https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69291 was REOPENED, because the "Issue still happens on i586 and fails the ruby build". t-nissie (Takeshi Nishimatsu)
Sorry, but GCC developers judged my bug report as INVALID. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69291 On the other hand, the same build error is reported in Ubuntu: amd64 build of ruby2.2 2.2.3-2 in ubuntu xenial RELEASE ht...t-nissie (Takeshi Nishimatsu)
I reported this issue as https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69291 with new info of: I found strange behavior. If I built the ruby in /tmp on CentOS 6.7, this issue does not stop to `make encdb.h`. But anyway, it stops to `m...t-nissie (Takeshi Nishimatsu)
gcc-6 fails to optimize ruby-2.3.0/regcomp.c:compile_length_quantifier_node() and cannot build the ruby. Even the -O1 optimization option fails. Adding `__attribute__((optimize("O0")))` before the function can evade this issue. I conf...t-nissie (Takeshi Nishimatsu)
This IS a GCC version specific issue. ~~~ make -j16 optflags="-O0 -fno-fast-math" ~~~ can compile ruby-2.3.0, but ~~~ make -j16 optflags="-O1 -fno-fast-math" ~~~ cannot. I want to know which file in ruby-2.3.0 reveals ...t-nissie (Takeshi Nishimatsu)
t-nissie (Takeshi Nishimatsu)05:05 PM Ruby Feature #12871: Using the algorithm like math.fsum of Python for Array#sum