Basically the standard defines 6 roundings
Rounding To Nearest either
1) (Half) Tied away from Zero
2) (Half) Tied to Even
Rounding Towards (Directional Rounding)
3) +Infinity
4) -Infinity
5) Zero
The IEEE854 2008 standard (well IEC 60559 which is part of ISO)
a) mandates 'rem' by (2). Almost everybody obeys it because it was
a relivatively recent addition. Julia does not.
b) says nothing about and 'mod' but
- C99 and D and Fortran chose (1) (trunc)
- Chapel and Julia chose (4) (floor)
Interesting that Chapel and Julia made the same choice.
Maybe we need a way to do Modulus ALL five different ways?
Executive/Consensus Decisions?
Regards - Damian
P.S. That Reference for Julia is (by the way) is
http://docs.julialang.org/en/release-0.1-0/manual/mathematical-operations/
At least Julia has 2 totally orthogonal methods.
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