| version 1.1, 2000/01/10 15:35:21 |
version 1.1.1.3, 2003/08/25 16:05:54 |
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| INSTALLING GMP |
Copyright 1996, 1997, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. |
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This file is part of the GNU MP Library. |
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The GNU MP Library is free software; you can redistribute it and/or modify |
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it under the terms of the GNU Lesser General Public License as published by |
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the Free Software Foundation; either version 2.1 of the License, or (at your |
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option) any later version. |
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The GNU MP Library is distributed in the hope that it will be useful, but |
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
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License for more details. |
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You should have received a copy of the GNU Lesser General Public License |
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to |
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA |
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02111-1307, USA. |
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INSTALLING GNU MP |
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================= |
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| These instructions are only for the impatient. Others should read the install |
These instructions are only for the impatient. Others should read the install |
| instructions in the manual, gmp.info. Use "info -f gmp.info", or, if you |
instructions in gmp.info. Use |
| don't have info, use type "C-h i g (gmp.info)Top" in emacs. |
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| Here are short instructions how to install MP, and some examples that help you |
info -f ./gmp.info |
| get started using MP. |
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| First, you need to compile, and optionally install, MP. Since you're |
or in emacs |
| impatient, try this: |
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| ./configure; make |
C-u C-h i gmp.info |
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| If that fails, or you care about the performance of MP, you need to read the |
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| full instructions in the chapter "Installing MP", in the manual. |
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| Next, you need to try some small test programs, for example the ones below. |
Here are some brief instructions on how to install GMP, and some examples to |
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help you get started using it. First you need to compile. Since you're |
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impatient, try this |
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| In MP programs, all variables need to be initialized before they are assigned, |
./configure |
| and cleared out before program flow leaves the scope in which it was declared. |
make |
| Here is an example of a program that reads two numbers from the command line, |
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| multiplies them, and prints the result to stdout. |
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If that fails, or you care about the performance of GMP, you need to read the |
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full instructions in the chapter "Installing GMP" in the manual. |
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Optionally, you can install with the following. This will be to /usr/local by |
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default, and you'll probably need to be "root" to be able to write there. |
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make install |
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Next, try some small test programs, for example the ones below. |
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In GMP programs, all variables need to be initialized before they are |
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assigned, and cleared out before program flow leaves the scope in which they |
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were declared. Here is an example program that reads two numbers from the |
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command line, multiplies them, and prints the result to stdout. |
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| #include <stdio.h> |
#include <stdio.h> |
| #include <gmp.h> /* All MP programs need to include gmp.h */ |
#include <gmp.h> /* All GMP programs need to include gmp.h */ |
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| main (int argc, char **argv) |
main (int argc, char **argv) |
| { |
{ |
| mpz_t a, b, p; |
mpz_t a, b, p; |
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if (argc != 3) |
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{ |
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printf ("Usage: %s <number> <number>\n", argv[0]); |
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return 1; |
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} |
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| /* Initialize variables */ |
/* Initialize variables */ |
| mpz_init (a); |
mpz_init (a); |
| mpz_init (b); |
mpz_init (b); |
| Line 42 multiplies them, and prints the result to stdout. |
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| Line 83 multiplies them, and prints the result to stdout. |
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| /* Multiply a and b and put the result in p */ |
/* Multiply a and b and put the result in p */ |
| mpz_mul (p, a, b); |
mpz_mul (p, a, b); |
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| /* Print p in base 10 */ |
/* Print p in decimal */ |
| mpz_out_str (stdout, 10, p); |
gmp_printf ("%Zd\n", p); |
| fputc ('\n', stdout); |
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| /* Clear out variables */ |
/* Clear out variables */ |
| mpz_clear (a); |
mpz_clear (a); |
| mpz_clear (b); |
mpz_clear (b); |
| mpz_clear (p); |
mpz_clear (p); |
| exit (0); |
return 0; |
| } |
} |
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| In practice, that example would be written like this instead: |
This might look tedious, with all the initializing and clearing. Fortunately |
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some of these operations can be combined, and other operations can often be |
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avoided. An experienced GMP user might write: |
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| #include <stdio.h> |
#include <stdio.h> |
| #include <gmp.h> |
#include <gmp.h> |
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| Line 63 In practice, that example would be written like this i |
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| Line 106 In practice, that example would be written like this i |
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| { |
{ |
| mpz_t a, b, p; |
mpz_t a, b, p; |
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if (argc != 3) |
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{ |
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printf ("Usage: %s <number> <number>\n", argv[0]); |
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return 1; |
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} |
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| /* Initialize and assign a and b from base 10 strings in argv */ |
/* Initialize and assign a and b from base 10 strings in argv */ |
| mpz_init_set_str (a, argv[1], 10); |
mpz_init_set_str (a, argv[1], 10); |
| mpz_init_set_str (b, argv[2], 10); |
mpz_init_set_str (b, argv[2], 10); |
| Line 72 In practice, that example would be written like this i |
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| Line 121 In practice, that example would be written like this i |
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| /* Multiply a and b and put the result in p */ |
/* Multiply a and b and put the result in p */ |
| mpz_mul (p, a, b); |
mpz_mul (p, a, b); |
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| /* Print p in base 10 */ |
/* Print p in decimal */ |
| mpz_out_str (stdout, 10, p); |
gmp_printf ("%Zd\n", p); |
| fputc ('\n', stdout); |
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| /* Since we're about to exit, no need to clear out variables */ |
/* Since we're about to exit, no need to clear out variables */ |
| exit (0); |
return 0; |
| } |
} |
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| Finally, you have to compile your test program, and link it with the MP |
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| library. Assuming your working directory is still the gmp source directory, |
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| type: |
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| gcc -g -I. example.c libgmp.a |
Now you have to compile your test program, and link it with the GMP library. |
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Assuming your working directory is still the gmp build directory, and your |
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source file is called example.c, enter: |
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gcc -g -I. example.c .libs/libgmp.a |
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After installing, the command becomes: "gcc -g example.c -lgmp". Also, GMP is |
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libtool based so you can use that to link if you want. |
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| Now try to run the example: |
Now try to run the example: |
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| a.out 98365871231256752134 319378318340103345227 |
./a.out 98365871231256752134 319378318340103345227 |
| 31415926535897932384618573336104570964418 |
31415926535897932384618573336104570964418 |
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| The functions used here all operate on the domain of signed integers. |
The functions used here all operate on signed integers, and have names |
| Functions operating on that domain have names starting with "mpz_". There are |
starting with "mpz_". There are many more such functions than used in these |
| many more such functions than used in these examples. See the chapter |
examples. See the chapter "Integer Functions" in the manual for a complete |
| "Integer Functions" in the manual, for a complete list. |
list. |
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| There are two other main classes of functions in MP. They operate on rational |
There are two other main classes of functions in GMP. They operate on |
| numbers and floating-point numbers, respectively. The chapters "Rational |
rational numbers and floating-point numbers, respectively. The chapters |
| Number Functions", and "Floating-point Functions" documents these classes. |
"Rational Number Functions", and "Floating-point Functions" document these |
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classes. |
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| To run a set of tests, do "make check". This will take a while. |
To run a set of tests, do "make check". This will take a while. |
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| To create the printable documentation from the texinfo source, type "make |
To create the printable documentation from the texinfo source, type "make |
| dvi". This requires the "tex" command to be available in your search path. |
gmp.dvi" or "make gmp.ps". This requires various "tex" commands. |
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| To install the library, do "make install". |
If you decide to use GMP, it is a good idea you at least read the chapter "GMP |
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| If you decide to use MP, It is a good idea you read at least the chapter "MP |
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| Basics" in the manual. |
Basics" in the manual. |
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Some known build problems are noted in the "Installing GMP" chapter of |
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the manual. Please report other problems to bug-gmp@gnu.org. |
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| Known Build Problems |
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| -------------------- |
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| Note that GCC 2.7.2 (as well as 2.6.3) for the RS/6000 and PowerPC can not |
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| be used to compile GMP, due to a bug in GCC. If you want to use GCC, you |
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| need to apply the patch at the end of this file, or use a later version of |
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| the compiler. |
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| If you are on a Sequent Symmetry, use GAS instead of the system's assembler |
---------------- |
| due to the latter's serious bugs. |
Local variables: |
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mode: text |
| The system compiler on NeXT is a massacred and old gcc, even if the |
fill-column: 78 |
| compiler calls itself cc. This compiler cannot be used to build GMP. You |
End: |
| need to get a real gcc, and install that before you compile GMP. (NeXT |
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| might have fixed this in newer releases of their system.) |
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| Please report other problems to bug-gmp@prep.ai.mit.edu. |
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| Patch to apply to GCC 2.6.3 and 2.7.2: |
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| *** config/rs6000/rs6000.md Sun Feb 11 08:22:11 1996 |
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| --- config/rs6000/rs6000.md.new Sun Feb 18 03:33:37 1996 |
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| *************** |
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| *** 920,926 **** |
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| (set (match_operand:SI 0 "gpc_reg_operand" "=r") |
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| (not:SI (match_dup 1)))] |
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| "" |
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| ! "nor. %0,%2,%1" |
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| [(set_attr "type" "compare")]) |
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| (define_insn "" |
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| --- 920,926 ---- |
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| (set (match_operand:SI 0 "gpc_reg_operand" "=r") |
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| (not:SI (match_dup 1)))] |
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| "" |
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| ! "nor. %0,%1,%1" |
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| [(set_attr "type" "compare")]) |
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| (define_insn "" |
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