Rounding with field width

[uneven loom]

With this code,

printf("%.1f\n", 3.25);
printf("%.1f\n", 3.75);

It outputs,

3.2
3.8

Why is the former rounded down and the latter rounded up?

[timber stump]

When your question is answered use !solved to mark the question as resolved.

Remember to ask specific questions, provide necessary details, and reduce your question to its simplest form. For tips on how to ask a good question use !howto ask.

[torpid pelican]

it's rounding to the even number

also you can change what gets output here with fesetround

(e.g. if you fesetround(FE_DOWNWARD) beforehand, it outputs 3.2 3.7)

[uneven loom]

does it always do this?

whats this behaviour called

[torpid pelican]

depends upon the rounding direction as I mentioned

[torpid pelican]

"round to nearest, tie to even"

[opaque hamlet]

Relevant here https://en.wikipedia.org/wiki/Rounding#Rounding_half_to_even

[uneven loom]

easy tq