On 12/4/22 18:57, thebluepandabear wrote:
> I am not understanding why Ali said there is a decimal mark if precision
> is nonzero?
>
> How can a number have zero precision?
That "precision" is referring to how many digits are printed after the
decimal mark in the formatted output.
> "the required digits after the decimal mark, the number of which is
> determined
> by precision (default precision is 6)"
So, if we print with %e, we get 6 digits:
enum f = 1.23456789;
writefln!"%e"(f);
Prints
1.234568e+00
There are 6 digits after the decimal point.
Now 3 digits of precision:
writefln!"%.3e"(f);
Prints
1.235e+00
Now 0 precision, where the decimal point will disappear:
writefln!"%.0e"(f);
Prints
1e+00
> Well double has a precision of 15
Different meanings for the same word...
> I feel like this section was explained poorly and it's confusing.
I have to agree. Nobody really knows these by heart. Once you know
what's available, you just come back and pick what you need for that
occasion.
Ali
