Windows + git head + Clozure 1.9 gives -0.170..... This agrees with Wolfram Alpha - I * Erf[- 0.15 * I] .
Maxima branch_5_30_base_98_g29f9239_dirty http://maxima.sourceforge.net
using Lisp Clozure Common Lisp Version 1.9-r15764 (WindowsX8632)
(%i1) erfi(- 0.15);
(%o1) -0.17053491636155
--Barton
________________________________________
From: maxima-bounces at math.utexas.edu [maxima-bounces at math.utexas.edu] on behalf of Raymond Toy [toy.raymond at gmail.com]
Sent: Tuesday, June 04, 2013 11:14
To: maxima at math.utexas.edu
Subject: Re: [Maxima] CVS testsuite failure erfi(-0.15) = 0.17
>>>>> "David" == David Billinghurst <dbmaxima at gmail.com> writes:
David> On 4/06/2013 1:43 PM, Raymond Toy wrote:
>> On 6/2/13 8:04 AM, David Billinghurst wrote:
>>> I get a testsuite failure with CVS maxima under gcl/windows.
>>>
>>> test is rtest_gamma problem 552 and it reduces to
>>>
>>> (%i1) erfi(- 0.15);
>>> (%o1) 0.17053491636155
>>>
>>> With maxima-5.30.0 and mma I get the opposite sign.
>> Interesting. With a pretty recent build, I get -0.17 using gcl on a
>> sparc box. (The only machine I have that will run gcl.)
>>
>> This is going to be difficult to work out. Did you get this on with
>> your windows installer? If so, I'll have to try it there.
>>
>> Ray
>>
David> I don't see these with my windows installer for 5.30.0 - only with git head.
David> I can do a binary search through the git tree to see when it started,
David> and do some debugging.
That would be great. I did a quick diff for changes between head and
5.30.0. The erf routines haven't changed.
Ray
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