@programminginc - страница 1468

Martin

It's the first time I see that syntax. Thank you

Anonymous

Hi

Dima

a[Range(1,3)] = 2; calls operator = (int v) && whereas auto b = a[Range(1,3)]; b = 5; calls operator = (int v) &

Is it c++17 feature?

MAYANK

Hii

K

How to store factorial of a very large number in c?

Badugar

Factorial was a number without number.somethingsomething , correct ? Then a long long can help.

Francisco

How to store factorial of a very large number in c?

GMP library

BinaryByter

GMP library

stop shooting with cannons on birds

BinaryByter

long long int is enough

BinaryByter

alternatively, use a struct with a bitfield

Dima

alternatively, use a struct with a bitfield

with a battlefield

BinaryByter

klimi

hey maxi how to use memset

BinaryByter

huh?

Francisco

stop shooting with cannons on birds

The factorial of a not-so-large number can be pretty big

BinaryByter

yes

BinaryByter

however, computing it will take such huge amounts of time

BinaryByter

that ¯\_(ツ)_/¯

BinaryByter

a uint128 can store a lot 😉

BinaryByter

the french bank uses uint128 with one cent being 10^<something> iirc

Mihail

a uint128 can store a lot 😉

That's a type?

BinaryByter

yep

Mihail

How to store factorial of a very large number in c?

https://www.boost.org/doc/libs/1_50_0/libs/math/doc/sf_and_dist/html/math_toolkit/special/factorials/sf_factorial.html

Mihail

yep

Since when does standard c++ have such type lol?

BinaryByter

Since when does standard c++ have such type lol?

stdint

BinaryByter

posix 😉

BinaryByter

Since when does standard c++ have such type lol?

since 30 years at least

Mihail

stdint

No?

Mihail

There's a special thing for gcc and clang and x64 target, but that's far from standard C++

BinaryByter

Oh right it only goes up to 64_t

BinaryByter

http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/stdint.h.html

Mihail

Also that would still barely store 34!

BinaryByter

Also that would still barely store 34!

¯\_(ツ)_/¯

Mihail

A 64bit int does like 28! I think

BinaryByter

Sure

BinaryByter

gmp is still a bit much though

BinaryByter

I mean . when do you need factorials?

BinaryByter

Sure if you ABSOLUTELY need one, go with gmp

BinaryByter

Or maybe search for something not made by gnu I don't trust gnu

Mihail

I mean . when do you need factorials?

That's what he asked for

BinaryByter

😂

BinaryByter

sure

oof

Oh hi there

oof

Thanks

BinaryByter

Anybody knows why this sigsev isnt caught?

BinaryByter

I'm prolly missing something very stupid lol

BinaryByter

doesnt work either

Mihail

Anybody knows why this sigsev isnt caught?

Because you can't catch it?

BinaryByter

then whats the point of a try catch? 😂

Mihail

then whats the point of a try catch? 😂

A C++ exception

Mihail

Not a segfault

BinaryByter

try catch cant catch normal system signals?

Mihail

No

BinaryByter

lol even C is better in that regard 😂

BinaryByter

http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/signal.h.html

BinaryByter

oh well ¯\_(ツ)_/¯

Mihail

lol even C is better in that regard 😂

You mean the same?

Mihail

https://en.cppreference.com/w/cpp/utility/program/signal

BinaryByter

Sure if you want ¯\_(ツ)_/¯

BinaryByter

I don't call putting an std:: in front of names a completely new thing that is dign of modern C++

Mihail

I don't call putting an std:: in front of names a completely new thing that is dign of modern C++

It's not new

Mihail

But it's there

Mihail

So how's C better?

BinaryByter

but in C++17 i'd expect there to be a better system

Mihail

Well lower your expectations then

Mihail

:shrug:

BinaryByter

So how's C better?

Its not, but the fact that you have to go the C route in C++ is kinda frighetning

Mihail

I agree

BinaryByter

Well lower your expectations then

you sound like a PHP dev 😉

Mihail

But there's a solution if you want it

Mihail

you sound like a PHP dev 😉

I've never used it

BinaryByter

i don't think that wanting to have your own handler for sigsevs is so uncommon that leaving the C-way for it is fair

BinaryByter

oh well ¯\_(ツ)_/¯

BinaryByter

got other things to implement

Ming

Thanks, I read it.

BinaryByter

very well!

oof

Does anyone plays Hack The Box here?

oof

Or doing OSCP