Re: #include <Integer.h> // valid for GNU g++ Integer.h: No such fileor directory

[Morten Gulbrandsen <f1000mhz at yahoo dot de>]

Brian Budge wrote:

> Hi Morten -
>
> I can't say that I've heard of Integer.h before, and moreover none of
> my linux systems have that header file.
>
> Is it from a special library, perhaps akin to gnu multiple precision?  
>
>  Brian
>
>
> On Tue, 22 Feb 2005 10:13:17 +0100, Morten.Gulbrandsen
> <f1000mhz@yahoo.de> wrote:
>  
>
> > Please help,
> >
> > how can I compile this ?
> >
> > g++  -v
> > Reading specs from /opt/sfw/gcc-3/lib/gcc-lib/i386-pc-solaris2.9/3.3.2/specs
> > Configured with: ../gcc-3.3.2/configure --prefix=/opt/sfw/gcc-3
> > --with-ld=/usr/ccs/bin/ld --with-as=/usr/ccs/bin/as --without-gnu-ld
> > --without-gnu-as --enable-shared
> > Thread model: posix
> > gcc version 3.3.2
> >
> > #include <assert.h>
> > #include <iostream>
> >
> > #include <Integer.h>            // valid for GNU g++
> >
> > using  namespace  std;
> >
> > int main()
> > {
> >   int       i;
> >   int       n;
> >    Integer   product = 1;
> >   // unsigned long long int product = 1;
> >
> >   cout << "The factorial of n will be computed.\n"
> >            "\n"
> >            "Input n: ";
> >
> >   cin >> n;
> >
> >   assert(cin && n >= 0);
> >
> >   for (i = 2; i <= n; ++i)
> >      product *= i;
> >
> >   cout << "\n"
> >            "factorial(" << n << ") = "
> >             << product << "\n"
> >            "\n";
> > }
> >
> > /*
> >
> > bash-2.05$ g++ -ansi -pedantic -Wall -o main.out  main.c    -L
> > /opt/sfw/gcc-3/lib/ -R /opt/sfw/gcc-3/lib/ -lstdc++
> > main.c:5:53: Integer.h: No such file or directory
> > main.c: In function `int main()':
> > main.c:13: error: `Integer' undeclared (first use this function)
> > main.c:13: error: (Each undeclared identifier is reported only once for
> > each
> >   function it appears in.)
> > main.c:13: error: parse error before `=' token
> > main.c:22: error: `product' undeclared (first use this function)
> >
> > */
> >
> > best regards
> >
> > Morten Gulbrandsen
> >
> >
> >    
>
>  

===


Hi Brian,  thank you,

I found it in some interesting code,

it should be possible to compute factorial 100  with it.

here I found more:


http://www.frenchfries.net/paul/factoring/source.html#gmplib

http://www.frenchfries.net/paul/src/Integer.h

http://www.frenchfries.net/paul/src/Integer.cc

Integer.h <http://www.frenchfries.net/paul/src/Integer.h>, and 
Integer.cc <http://www.frenchfries.net/paul/src/Integer.cc>
This is a C++ Integer class that I threw together to make the gmp 
library work like normal arithmetic. It lets you play with big integers 
just like you would with |(int)| or |(long int)|. There is also a 
.tar.gz <http://www.frenchfries.net/paul/src/Integer_class.tar.gz> 
version available that includes small Makefile and demo test code.
Requires the GMP library 
<http://www.frenchfries.net/paul/factoring/source.html#gmplib> from GNU.

The page looks nice and I would like to try it out.

The idea is to be able to make some ADT   Integer  with arbitrary 
precicion.

factorial  100   -   10000  would be fine.


I first read about Integer.h   in conjunction with   gcc 
from here :

http://www.cse.ucsc.edu/~pohl/abc4.html

The sources extracts to

bash-2.05$ cat READ_ME
---
The GNU C++ compiler, g++, provides the header file

  Integer.h

for working with big integers.  The latest versions
of the compiler requires that the library

  libg++.a

be made available to it.  We provide access via the
makefile.




bash-2.05$ cat makefile
CC      =  g++
CFLAGS  =  -Wall
EXEC    =  a.out
INCLS   = 
LIBS    =  -lg++       ## for the Integer type in Integer.h

OBJS    =  main.o

$(EXEC): $(OBJS)
       @echo "linking ..."
       @$(CC)  $(CFLAGS)  -o $(EXEC)  $(OBJS)  $(LIBS)

$(OBJS):
       $(CC)  $(CFLAGS)  $(INCLS)  -c  $*.c

relink:
       @echo "relinking ..."
       @$(CC)  $(CFLAGS)  -o $(EXEC)  $(OBJS)  $(LIBS)




bash-2.05$ cat main.c
#include <assert.h>
#include <iostream.h>
#include <Integer.h>            // valid for GNU g++

int main()
{
  int       i;
  int       n;
  Integer   product = 1;

  cout << "The factorial of n will be computed.\n"
           "\n"
           "Input n: ";
  cin >> n;
  assert(cin && n >= 0);
  for (i = 2; i <= n; ++i)
     product *= i;
  cout << "\n"
           "factorial(" << n << ") = " << product << "\n"
           "\n";
}
bash-2.05$




I don't think I did something wrong, but I must have missed something,
anyway I have two different version available.


bash-2.05$ /opt/sfw/bin/gcc -v
Reading specs from /opt/sfw/lib/gcc-lib/i386-pc-solaris2.9/2.95.3/specs
gcc version 2.95.3 20010315 (release)



bash-2.05$ which g++
/opt/sfw/gcc-3/bin/g++
bash-2.05$ g++  -v
Reading specs from /opt/sfw/gcc-3/lib/gcc-lib/i386-pc-solaris2.9/3.3.2/specs
Configured with: ../gcc-3.3.2/configure --prefix=/opt/sfw/gcc-3 
--with-ld=/usr/ccs/bin/ld --with-as=/usr/ccs/bin/as --without-gnu-ld 
--without-gnu-as --enable-shared
Thread model: posix
gcc version 3.3.2







Please help

Best regards

Morten Gulbrandsen