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Automatically exported from code.google.com/p/go-fn
The interface and naming doesn't match the rest of go-fn, but this otherwise
adds working versions of the upper incomplete gamma function, the inverse of
the upper incomplete gamma function, the exponential integral E1 and the family
En. There are certainly several optimizations still possible/needed - large
alpha, for instance, is not handled well. These have also not been thoroughly
tested, either, but are numerically sound in the regions I have tried them
(negative and positive alpha in the region -3, 3, large and small x).
Original issue reported on code.google.com by [email protected]
on 15 May 2013 at 11:28
Attachments:
What steps will reproduce the problem?
go test (with choose_test.go): first two cases
Original issue reported on code.google.com by tyapca7
on 28 Mar 2013 at 3:46
Many of the source files refer to a non-existent LICENSE file. The license
listed for the project is the New BSD license, so this file should probably be
copied into the project root as LICENSE:
In the original BSD license, the occurrence of "copyright holder" in the 3rd
clause read "ORGANIZATION", placeholder for "University of California". In the
original BSD license, both occurrences of the phrase "COPYRIGHT HOLDERS AND
CONTRIBUTORS" in the disclaimer read "REGENTS AND CONTRIBUTORS".
Here is the license template:
Copyright (c) <YEAR>, <OWNER>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors
may be used to endorse or promote products derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Original issue reported on code.google.com by [email protected]
on 25 Jul 2014 at 7:43
Fixed bug in HarmonicMean ( see http://en.wikipedia.org/wiki/Harmonic_mean ).
Replaced "math.Log( 1.0 +" in line 109 with math.Log1p for increased numerical
accuracy.
Original issue reported on code.google.com by [email protected]
on 9 Aug 2012 at 6:07
Attachments:
Huge speedup & simplification of the Round function.
Original issue reported on code.google.com by [email protected]
on 5 May 2013 at 10:16
Attachments:
What steps will reproduce the problem?
Run Choose(3, 2)
What is the expected output? What do you see instead?
Expected: (3 choose 2) = 3
Actual: 6
Please provide any additional information below.
This bug can be solved by changing line #152 in the choose.go file from:
return PartialFactInt(n, smaller) / FactInt(smaller)
to:
return PartialFactInt(n, smaller) / FactInt(n-smaller)
Original issue reported on code.google.com by [email protected]
on 18 Nov 2013 at 8:55
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