For example, as in $2^N$, Calctus silently returns truncated answer if $N$ is bigger than 49 :
$2^{48} = 281474976710656$ (correct)
$2^{49} = 562949953421312$ (correct)
$2^{50} \stackrel{?!}{=} 1125899906842620$ (incorrect)
$2^{51} \stackrel{?!}{=} 2251799813685250$ (incorrect)
...
$2^{63} \stackrel{?!}{=} 9223372036854780000$ (incorrect. should be $9223372036854775808$)
$2^{64} \stackrel{?!}{=} 18446744073709600000$ (incorrect. should be $18446744073709551616$)
It returns correct answer if we don't directly use ^ with big numbers.
e.g. 2^40 * 2^24 returns right answer of $2^{64}$.
This issue can be especially troublesome on some cases, such as calculating the value of UINT64_MAX or INT64_MAX.
For example, as in$2^N$ , Calctus silently returns truncated answer if $N$ is bigger than 49 :
$2^{48} = 281474976710656$ (correct)
$2^{49} = 562949953421312$ (correct)
$2^{50} \stackrel{?!}{=} 1125899906842620$ (incorrect)
$2^{51} \stackrel{?!}{=} 2251799813685250$ (incorrect)
$2^{63} \stackrel{?!}{=} 9223372036854780000$ (incorrect. should be $9223372036854775808$ )
$2^{64} \stackrel{?!}{=} 18446744073709600000$ (incorrect. should be $18446744073709551616$ )
...
It returns correct answer if we don't directly use ^ with big numbers.$2^{64}$ .
e.g.
2^40 * 2^24returns right answer ofThis issue can be especially troublesome on some cases, such as calculating the value of
UINT64_MAXorINT64_MAX.