Hello,
I'm working on rounding errors when using DecimalFormat, and have seen
a difference from RI. I think this is a RI bug:
When using, for example, System.out.printf("%.6f", new
BigDecimal("0.12345678"));,
no rounding will be performed, and 0.12345678 will be displayed on RI.
However, on Harmony, 0.123457 will be print. I see no reason for not
rounding when using BigDecimal, so I think we should keep this
behaviour. Current unit tests only use integral BigDecimal, so I will
add tests after answer to my question.
I have another problem with BigDecimal : BigDecimal does not seem to
keep trace of negative or positive zero. So System.out.printf("%f",
new BigDecimal("-0.0")); will print 0.0, both on RI and Harmony. But,
if we round BigDecimal in printf, do you think the result of
System.out.printf("%.6f", "-0.00000012345"); should be 0.000000 or
-0.000000 ?
