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author | Adriaan Moors <adriaan.moors@epfl.ch> | 2012-06-08 06:19:40 -0700 |
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committer | Adriaan Moors <adriaan.moors@epfl.ch> | 2012-06-08 06:19:40 -0700 |
commit | 1fac5bcbbcb9bbfc5953c29574f3952b97945921 (patch) | |
tree | a1f63a911b25a05eaed9e05972702913f17fe533 /test/files/run | |
parent | 5cd82554069508af769d59f9e41af36f6524b4cc (diff) | |
parent | 0291797fec629c750cefea17ff23c9adc236fec4 (diff) | |
download | scala-1fac5bcbbcb9bbfc5953c29574f3952b97945921.tar.gz scala-1fac5bcbbcb9bbfc5953c29574f3952b97945921.tar.bz2 scala-1fac5bcbbcb9bbfc5953c29574f3952b97945921.zip |
Merge pull request #672 from axel22/issue/5857
Fixes SI-5857. More efficient min and max in Range and NumericRange
Diffstat (limited to 'test/files/run')
-rw-r--r-- | test/files/run/t5857.scala | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/test/files/run/t5857.scala b/test/files/run/t5857.scala new file mode 100644 index 0000000000..bf67bedf54 --- /dev/null +++ b/test/files/run/t5857.scala @@ -0,0 +1,45 @@ + + + +object Test { + + def time[U](b: =>U): Long = { + val start = System.currentTimeMillis + b + val end = System.currentTimeMillis + + end - start + } + + def main(args: Array[String]) { + val sz = 1000000000 + + val range = 1 to sz + check { assert(range.min == 1, range.min) } + check { assert(range.max == sz, range.max) } + + val descending = sz to 1 by -1 + check { assert(descending.min == 1) } + check { assert(descending.max == sz) } + + val numeric = 1.0 to sz.toDouble by 1 + check { assert(numeric.min == 1.0) } + check { assert(numeric.max == sz.toDouble) } + + val numdesc = sz.toDouble to 1.0 by -1 + check { assert(numdesc.min == 1.0) } + check { assert(numdesc.max == sz.toDouble) } + } + + def check[U](b: =>U) { + val exectime = time { + b + } + + // whatever it is, it should be less than, say, 250ms + // if `max` involves traversal, it takes over 5 seconds on a 3.2GHz i7 CPU + //println(exectime) + assert(exectime < 250, exectime) + } + +} |