Morten -
>From what I can tell, you need to (1) download the files Integer.h and
Integer.cc, as well as the gnu multiple precision library (gmp). With
the Integer.* files in your project, and linking gmp, your program
will likely work.
Brian
On Tue, 22 Feb 2005 12:25:56 +0100, Morten Gulbrandsen
<f1000mhz@xxxxxxxx> wrote:
> 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@xxxxxxxx> 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
>
>
