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| author | Raif Naffah <raif@fl.net.au> | 2002-12-19 06:59:46 +0000 |
|---|---|---|
| committer | Tom Tromey <tromey@gcc.gnu.org> | 2002-12-19 06:59:46 +0000 |
| commit | a17cf75b73d8ba9dc579ebe08a15af47d7ff456b (patch) | |
| tree | b20d44b018e021f20e342a2d3bc893edfb37e03c /libjava | |
| parent | 71d082af2f352ab8c65c6668ecef830fdc2547f2 (diff) | |
| download | gcc-a17cf75b73d8ba9dc579ebe08a15af47d7ff456b.zip gcc-a17cf75b73d8ba9dc579ebe08a15af47d7ff456b.tar.gz gcc-a17cf75b73d8ba9dc579ebe08a15af47d7ff456b.tar.bz2 | |
BigInteger.java (euclidInv): Make sure quot and rem are in canonical form after divide().
2002-12-18 Raif Naffah <raif@fl.net.au>
* java/math/BigInteger.java (euclidInv): Make sure quot and rem are in
canonical form after divide().
(modInverse): Likewise.
From-SVN: r60292
Diffstat (limited to 'libjava')
| -rw-r--r-- | libjava/ChangeLog | 6 | ||||
| -rw-r--r-- | libjava/java/math/BigInteger.java | 6 |
2 files changed, 12 insertions, 0 deletions
diff --git a/libjava/ChangeLog b/libjava/ChangeLog index ae8559c..1340fc0 100644 --- a/libjava/ChangeLog +++ b/libjava/ChangeLog @@ -1,3 +1,9 @@ +2002-12-18 Raif Naffah <raif@fl.net.au> + + * java/math/BigInteger.java (euclidInv): Make sure quot and rem are in + canonical form after divide(). + (modInverse): Likewise. + 2002-12-13 Casey Marshall <rsdio@metastatic.org> Mark Wielaard <mark@klomp.org> diff --git a/libjava/java/math/BigInteger.java b/libjava/java/math/BigInteger.java index e8c6b1d..ac21ecc 100644 --- a/libjava/java/math/BigInteger.java +++ b/libjava/java/math/BigInteger.java @@ -1113,6 +1113,9 @@ public class BigInteger extends Number implements Comparable BigInteger rem = new BigInteger(); BigInteger quot = new BigInteger(); divide(a, b, quot, rem, FLOOR); + // quot and rem may not be in canonical form. ensure + rem.canonicalize(); + quot.canonicalize(); xy = euclidInv(b, rem, quot); } @@ -1192,6 +1195,9 @@ public class BigInteger extends Number implements Comparable BigInteger rem = new BigInteger(); BigInteger quot = new BigInteger(); divide(x, y, quot, rem, FLOOR); + // quot and rem may not be in canonical form. ensure + rem.canonicalize(); + quot.canonicalize(); result = euclidInv(y, rem, quot)[swapped ? 0 : 1]; // Result can't be negative, so make it positive by adding the |