[cardiffspaceman]

What machine can represent all those decimal digits so precisely that the ending decimal digits ...0288 are exactly right and not ...0287 ?

I'll accept without looking it up that the statement is correct syntax in some language (it doesn't look like C++ to me).

[pklausler]

See above. The constant is (a) not pi, and (b) not an exact decimal representation of any binary floating-point number.