calculating 2^601 results in "1.#INF00"

[Alexandre Proulx]

I am trying to find 2 at the power of 601, but my calculator doesn't have a large enough screen, so I decided to make a program for my computer to do this, but when I get to a high number the computer only prints : 1.#INF00. Is there any way to do it? My code is the fallowing:

 #include <iostream> 
#include <stdio.h>
#include <math.h>
 
using namespace std;
float a;
float x;
float y;
 
main()
{
x=2;
y=601;
a = pow(x,y);
printf("%f",a);
cin.get();
} 
 

[DeMan]

2^601 is (VERY) very very very large.....
I suspect this number is two big for any of the primitives (I suspect even 2^100 is probably too large)

[DeMan]

Others have come accross this problem before, you may like to take a look at this

[Alexandre Proulx]

Others have come accross this problem before, you may like to take a look at this

I'm trying to compile the NTL program but this is the answer I get from the compiler:


[Linker error] undefined reference to `touch_double(d ouble*)'
[Linker error] undefined reference to `val_double(dou ble)'
[Linker error] undefined reference to `val_double(dou ble)'
[Linker error] undefined reference to `touch_double(d ouble*)'
[Linker error] undefined reference to `val_double(dou ble)'




and etc.., what do I have to do?

[DeMan]

It sounds like you have included the appropriate header files, but the compiler can't find the code ( .cpp) files.

You need to specify the path to the source files as well as to the headers

If you are using an IDE, this is as easy as making sure that the src folder is in the search path for the compiler

[Alexandre Proulx]

I downloaded WinNTL 5.4.1 and unzipped it in C:\ and Now I'm trying to
Compile the Program but I have a hard time doing so (Even though I
fallow the Instructions) could you or anybody try Compiling it, and
after that guide me through the steps? I can use the IDE Dev-C++ and
MinGW(Minimal GNU for Windows) as Compilers.

Thanks,
Alex

[DeMan]

Could you please list some of the errors you are getting, the files you are including....

You can actually add each file (including the .cpp) to your project, ro you can go to the directories option under project options and add the directories these files are in

[Alexandre Proulx]

The Installation instructions of the program told me to compile everyting
in the src directory, and create a static library, which I did with
Dev-C++ IDE, everything went well with the compilation, but It created
a ".a" file instead of a ".lib" file. So this is why I asked you to try
it if you want, and then show me how, or if you already know how.

Thanks

[DeMan]

A .a is much the same thing as a .lib....

in Dev go to "Project Options", select the "Parameters " Tab, Click "Add Library or Object" (lower Right Hand Side), and browse through to find your .a

[Alexandre Proulx]

Thanks the compilation works fine,
I compiled my program with the fallowing codes:

 #include <iostream> 
#include <stdio.h>
#include <math.h>
#include <NTL/ZZ.h>
#define NTL_NO_MIN_MAX ;
 
using namespace std;
float a;
float x;
float y;
 
main()
{
x=2;
y=601;
a = pow(x,y);
printf("%f",a);
cin.get();
}
 

With the "ntl.a" file included also in Project Options,
and the src folder in the search path,
but my program stills print "1.#INF00".
Do you know of any other way?