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

[Brian Budge <brian dot budge at gmail dot com>]

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@yahoo.de> 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@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
> 
>