version 1.1.1.2, 2000/09/09 14:12:13 |
version 1.1.1.3, 2003/08/25 16:05:54 |
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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 |
INSTALLING GNU MP |
================= |
================= |
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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 |
instructions in gmp.info. Use |
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info -f ./gmp.info |
info -f ./gmp.info |
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Here are some brief instructions on how to install GMP, and some examples to |
Here are some brief instructions on how to install GMP, and some examples to |
help you get started using GMP. |
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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First, you need to compile, and optionally install, GMP. Since you're |
./configure |
impatient, try this: |
make |
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./configure; make |
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If that fails, or you care about the performance of GMP, you need to read the |
If that fails, or you care about the performance of GMP, you need to read the |
full instructions in the chapter "Installing GMP", in the manual. |
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. |
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 |
In GMP programs, all variables need to be initialized before they are |
Line 40 command line, multiplies them, and prints the result t |
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Line 66 command line, multiplies them, and prints the result t |
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mpz_t a, b, p; |
mpz_t a, b, p; |
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if (argc != 3) |
if (argc != 3) |
{ printf ("Usage: %s <number> <number>\n", argv[0]); exit (1); } |
{ |
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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); |
Line 54 command line, multiplies them, and prints the result t |
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Line 83 command line, multiplies them, and prints the result t |
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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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Line 79 avoided. An experienced GMP user might write: |
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Line 107 avoided. An experienced GMP user might write: |
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mpz_t a, b, p; |
mpz_t a, b, p; |
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if (argc != 3) |
if (argc != 3) |
{ printf ("Usage: %s <number> <number>\n", argv[0]); exit (1); } |
{ |
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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); |
Line 90 avoided. An experienced GMP user might write: |
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Line 121 avoided. An experienced GMP user might write: |
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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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Now you have to compile your test program, and link it with the GMP library. |
Now you have to compile your test program, and link it with the GMP library. |
Assuming your working directory is still the gmp source directory, and your |
Assuming your working directory is still the gmp build directory, and your |
source file is called example.c, enter: |
source file is called example.c, enter: |
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gcc -g -I. example.c .libs/libgmp.a |
gcc -g -I. example.c .libs/libgmp.a |
Line 115 Now try to run the example: |
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Line 145 Now try to run the example: |
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The functions used here all operate on signed integers, and have names |
The functions used here all operate on signed integers, and have names |
starting with "mpz_". There are many more such functions than used in these |
starting with "mpz_". There are many more such functions than used in these |
examples. See the chapter "Integer Functions" in the manual, for a complete |
examples. See the chapter "Integer Functions" in the manual for a complete |
list. |
list. |
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There are two other main classes of functions in GMP. They operate on |
There are two other main classes of functions in GMP. They operate on |
Line 127 To run a set of tests, do "make check". This will tak |
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Line 157 To run a set of tests, do "make check". This will tak |
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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 |
gmp.dvi" or "make gmp.ps". This requires various "tex" commands. |
gmp.dvi" or "make gmp.ps". This requires various "tex" commands. |
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To install the library, do "make install" (then you can use -lgmp instead of |
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.libs/libgmp.a). |
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If you decide to use GMP, it is a good idea you at least read the chapter "GMP |
If you decide to use GMP, it is a good idea you at least read the chapter "GMP |
Basics" in the manual. |
Basics" in the manual. |