spielwiese
|
Last change
on this file since 806c18 was
806c18,
checked in by Hans Schoenemann <hannes@…>, 13 years ago
|
|
format
git-svn-id: file:///usr/local/Singular/svn/trunk@13655 2c84dea3-7e68-4137-9b89-c4e89433aadc
|
-
Property mode set to
100644
|
|
File size:
669 bytes
|
| Line | |
|---|
| 1 | /* emacs edit mode for this file is -*- C++ -*- */ |
|---|
| 2 | /* $Id$ */ |
|---|
| 3 | |
|---|
| 4 | #include <config.h> |
|---|
| 5 | |
|---|
| 6 | #include "assert.h" |
|---|
| 7 | |
|---|
| 8 | #include "cf_defs.h" |
|---|
| 9 | #include "canonicalform.h" |
|---|
| 10 | #include "cf_algorithm.h" |
|---|
| 11 | #include "cf_random.h" |
|---|
| 12 | |
|---|
| 13 | static bool |
|---|
| 14 | is_irreducible ( const CanonicalForm & f ) |
|---|
| 15 | { |
|---|
| 16 | CFFList F = factorize( f ); |
|---|
| 17 | return F.length() == 1 && F.getFirst().exp() == 1; |
|---|
| 18 | } |
|---|
| 19 | |
|---|
| 20 | CanonicalForm |
|---|
| 21 | find_irreducible ( int deg, CFRandom & gen, const Variable & x ) |
|---|
| 22 | { |
|---|
| 23 | CanonicalForm result; |
|---|
| 24 | int i; |
|---|
| 25 | do { |
|---|
| 26 | result = power( x, deg ); |
|---|
| 27 | for ( i = deg-1; i >= 0; i-- ) |
|---|
| 28 | result += gen.generate() * power( x, i ); |
|---|
| 29 | } while ( ! is_irreducible( result ) ); |
|---|
| 30 | return result; |
|---|
| 31 | } |
|---|
Note: See
TracBrowser
for help on using the repository browser.
