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| author | Tom Tromey <tromey@cygnus.com> | 1999-05-07 17:39:52 +0000 |
|---|---|---|
| committer | Tom Tromey <tromey@gcc.gnu.org> | 1999-05-07 17:39:52 +0000 |
| commit | c59c5e9a6508d3a72fe058126482083ad2e5ceeb (patch) | |
| tree | fa48d4253f7d39a998ed21736d3486657e6b33ae /libjava/java/lang/natCharacter.cc | |
| parent | a06fcbd4642aa771f89763ee68de272fe0b1003e (diff) | |
| download | gcc-c59c5e9a6508d3a72fe058126482083ad2e5ceeb.zip gcc-c59c5e9a6508d3a72fe058126482083ad2e5ceeb.tar.gz gcc-c59c5e9a6508d3a72fe058126482083ad2e5ceeb.tar.bz2 | |
* java/lang/natCharacter.cc (isLowerCase): Use a binary search.
From-SVN: r26829
Diffstat (limited to 'libjava/java/lang/natCharacter.cc')
| -rw-r--r-- | libjava/java/lang/natCharacter.cc | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/libjava/java/lang/natCharacter.cc b/libjava/java/lang/natCharacter.cc index 36cf570..fa312d1 100644 --- a/libjava/java/lang/natCharacter.cc +++ b/libjava/java/lang/natCharacter.cc @@ -152,12 +152,27 @@ java::lang::Character::isLowerCase (jchar ch) if (table_search (lower_case_table, asize (lower_case_table), ch) != -1) return true; - // FIXME: use a binary search. - for (unsigned int i = 0; i < asize (lower_anomalous_table); ++i) + int low, high, i, old; + + low = 0; + high = asize (lower_anomalous_table); + i = high / 2; + + while (true) { - if (lower_anomalous_table[i] == ch) + if (ch < lower_anomalous_table[i]) + high = i; + else if (ch > lower_anomalous_table[i]) + low = i; + else return true; + + old = i; + i = (high + low) / 2; + if (i == old) + break; } + return false; } |