-INSTALLING GMP
-==============
+
+ INSTALLING GNU MP
+ =================
+
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
-don't have info, use type "C-h i g (gmp.info)Top" in emacs.
+instructions in the manual, gmp.info. Use
+
+ info -f ./gmp.info
+
+or in emacs
-Here are short instructions how to install MP, and some examples that help you
-get started using MP.
+ C-u C-h i gmp.info
-First, you need to compile, and optionally install, MP. Since you're
+
+Here are some brief instructions on how to install GMP, and some examples to
+help you get started using GMP.
+
+First, you need to compile, and optionally install, GMP. Since you're
impatient, try this:
./configure; make
-If that fails, or you care about the performance of MP, you need to read the
-full instructions in the chapter "Installing MP", in the manual.
+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.
+
+Next, try some small test programs, for example the ones below.
-Next, you need to try some small test programs, for example the ones below.
+In GMP programs, all variables need to be initialized before they are
+assigned, and cleared out before program flow leaves the scope in which they
+were declared. Here is an example program that reads two numbers from the
+command line, multiplies them, and prints the result to stdout.
-In MP programs, all variables need to be initialized before they are assigned,
-and cleared out before program flow leaves the scope in which it was declared.
-Here is an example of a program that reads two numbers from the command line,
-multiplies them, and prints the result to stdout.
#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 */
main (int argc, char **argv)
{
mpz_t a, b, p;
+ if (argc != 3)
+ { printf ("Usage: %s <number> <number>\n", argv[0]); exit (1); }
+
/* Initialize variables */
mpz_init (a);
mpz_init (b);
}
-In practice, that example would be written like this instead:
+This might look tedious, with all the initializing and clearing. Fortunately
+some of these operations can be combined, and other operations can often be
+avoided. An experienced GMP user might write:
+
#include <stdio.h>
#include <gmp.h>
{
mpz_t a, b, p;
+ if (argc != 3)
+ { printf ("Usage: %s <number> <number>\n", argv[0]); exit (1); }
+
/* Initialize and assign a and b from base 10 strings in argv */
mpz_init_set_str (a, argv[1], 10);
mpz_init_set_str (b, argv[2], 10);
exit (0);
}
-Finally, you have to compile your test program, and link it with the MP
-library. Assuming your working directory is still the gmp source directory,
-type:
- gcc -g -I. example.c libgmp.a
+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
+source file is called example.c, enter:
+ gcc -g -I. example.c .libs/libgmp.a
+
+After installing, the command becomes: "gcc -g example.c -lgmp". Also, GMP is
+libtool based so you can use that to link if you want.
Now try to run the example:
- a.out 98365871231256752134 319378318340103345227
+ ./a.out 98365871231256752134 319378318340103345227
31415926535897932384618573336104570964418
-The functions used here all operate on the domain of signed integers.
-Functions operating on that domain have names 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 list.
+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
+examples. See the chapter "Integer Functions" in the manual, for a complete
+list.
-There are two other main classes of functions in MP. They operate on rational
-numbers and floating-point numbers, respectively. The chapters "Rational
-Number Functions", and "Floating-point Functions" documents these classes.
+There are two other main classes of functions in GMP. They operate on
+rational numbers and floating-point numbers, respectively. The chapters
+"Rational Number Functions", and "Floating-point Functions" document these
+classes.
To run a set of tests, do "make check". This will take a while.
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.
-To install the library, do "make install".
+To install the library, do "make install" (then you can use -lgmp instead of
+.libs/libgmp.a).
-If you decide to use MP, It is a good idea you read at least the chapter "MP
+If you decide to use GMP, it is a good idea you at least read the chapter "GMP
Basics" in the manual.
+Some known build problems are noted in the "Installing GMP" chapter of
+the manual. Please report other problems to bug-gmp@gnu.org.
+
+
-Known Build Problems
---------------------
-
-Note that GCC 2.7.2 (as well as 2.6.3) for the RS/6000 and PowerPC can not
-be used to compile GMP, due to a bug in GCC. If you want to use GCC, you
-need to apply the patch at the end of this file, or use a later version of
-the compiler.
-
-If you are on a Sequent Symmetry, use GAS instead of the system's assembler
-due to the latter's serious bugs.
-
-The system compiler on NeXT is a massacred and old gcc, even if the
-compiler calls itself cc. This compiler cannot be used to build GMP. You
-need to get a real gcc, and install that before you compile GMP. (NeXT
-might have fixed this in newer releases of their system.)
-
-Please report other problems to bug-gmp@prep.ai.mit.edu.
-
-
-Patch to apply to GCC 2.6.3 and 2.7.2:
-
-*** config/rs6000/rs6000.md Sun Feb 11 08:22:11 1996
---- config/rs6000/rs6000.md.new Sun Feb 18 03:33:37 1996
-***************
-*** 920,926 ****
- (set (match_operand:SI 0 "gpc_reg_operand" "=r")
- (not:SI (match_dup 1)))]
- ""
-! "nor. %0,%2,%1"
- [(set_attr "type" "compare")])
-
- (define_insn ""
---- 920,926 ----
- (set (match_operand:SI 0 "gpc_reg_operand" "=r")
- (not:SI (match_dup 1)))]
- ""
-! "nor. %0,%1,%1"
- [(set_attr "type" "compare")])
-
- (define_insn ""
+----------------
+Local variables:
+mode: text
+fill-column: 78
+End:
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