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| author | Mattias Andrée <maandree@operamail.com> | 2014-01-20 02:11:26 +0100 |
|---|---|---|
| committer | Mattias Andrée <maandree@operamail.com> | 2014-01-20 02:11:26 +0100 |
| commit | 586882ccfb7dd3910b019f1c86abbf824c088637 (patch) | |
| tree | b6bc37cb84995021a7a6acd5e8cf013baac919b9 /src | |
| parent | add signum (diff) | |
| download | algorithms-and-data-structures-586882ccfb7dd3910b019f1c86abbf824c088637.tar.gz algorithms-and-data-structures-586882ccfb7dd3910b019f1c86abbf824c088637.tar.bz2 algorithms-and-data-structures-586882ccfb7dd3910b019f1c86abbf824c088637.tar.xz | |
add opposite sign detection
Signed-off-by: Mattias Andrée <maandree@operamail.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/algorithms/bits/Signum.java | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/algorithms/bits/Signum.java b/src/algorithms/bits/Signum.java index 647076c..515e86d 100644 --- a/src/algorithms/bits/Signum.java +++ b/src/algorithms/bits/Signum.java @@ -84,6 +84,18 @@ public class Signum * 1 ^ ((unsigned £{T})value >> (sizeof(£{T}) * CHAR_BITS - 1)) */ } + + /** + * Detect if two integers have opposite signs + * + * @param a One of the integers + * @param b The other of the integers + * @return {@code true} iff either {@code a} or {@code b} is negative and the other is positive + */ + public static boolean haveOpposite(£{T} a, £{T} b) + { + return (x ^ y) < 0; + } £>done } |