[Issue 13369] std.math.iLog10

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=13369

--- Comment #1 from bearophile_hugs at eml.cc ---
An example of the risks of using ceil(log10):


void main() {
    import std.stdio, std.math;
    immutable x = 10 ^^ 7;
    writefln("%1.20f", x.log10);
    writeln(x.log10.ceil);
}


Output:
7.00000000000000000040
8

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