[Octave-bug-tracker] [bug #61143] Functions sum and mean returns wrong answer for single precision input

[Dmitri A. Sergatskov]

Follow-up Comment #14, bug #61143 (project octave):

Here is some benchmarks on a Ryzen computer (with avx optimization):


octave:1> x=single(100*ones(100e+6,1));
octave:2> sum(x)
ans = 2.1475e+09
octave:3> sum(x,"extra")
ans = 1.0000e+10
octave:4> tic; sum(x); toc
Elapsed time is 0.068001 seconds.
octave:5> tic; sum(double(x)); toc
Elapsed time is 0.140945 seconds.
octave:6> tic; sum(x,"extra"); toc
Elapsed time is 0.0682781 seconds.
octave:7> tic; sum(double(x), "extra"); toc
Elapsed time is 0.182113 seconds.


The issue is that it is impossible at the moment to pass "extra" parameters to
the functions that use sum() internally.

Dmitri.
-- 


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