CODEWITHSUNDEEP
c++
user765443
user765443

Reputation:

32 bit long vs 64 bit long

I am working on project (c++ integration with Python) which has migrated to 32 bit machine to 64 bit machine. In Python, C long is mapped with Python Integer. SO I can not change in Python Interface(client interface) and always gets overflow error from python client. it was working fine in 32 bit machine

So I have following solution

1)convert all long to int in 64 bit machine.

2)Declare 32 bit long in 64 bit machine.

Do we have any general solution/header file which give me option to declare 32 bit datatype always So I can handle this issue in more general way.

I know it may be small issue but I am not able to find general solution.

Upvotes: 0

Views: 1143

Answers (2)

Basile Starynkevitch
Basile Starynkevitch

Reputation: 1

standard C99 (and newer) has <stdint.h> header defining int32_t for 32 bits signed integers (and many other types) and recent C++ have <cstdint>

If you care about bignums (arbitrary precision numbers), be aware that it is a difficult subject and use some existing library, like GMP.

Upvotes: 3

user529758
user529758

Reputation:

Do we have any general solution/header file which give me option to declare 32 bit datatype always?

Yes, there is, since C99.

#include <stdint.h>

uint32_t foo;

Upvotes: 4

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