[sage-support] Re: problem building 5.4.1 on macosx 10.8.2
Volker, C_INCLUDE_PATH / CPLUS_INCLUDE_PATH are overriding the default gcc header search path. This is why compilation is failing. Did fink put in these system-wide environment variables? Thats seriously effed up. no, they come from my .bashrc. they've been there since 2008. sadly, i no longer remember (nor documented) the reason they ended up there. the gcc man page is a bit ambiguous: CPATH C_INCLUDE_PATH CPLUS_INCLUDE_PATH OBJC_INCLUDE_PATH Each variable's value is a list of directories separated by a special character, much like PATH, in which to look for header files. The special character, PATH_SEPARATOR, is target-dependent and determined at GCC build time. For Microsoft Windows-based targets it is a semicolon, and for almost all other targets it is a colon. CPATH specifies a list of directories to be searched as if specified with -I, but after any paths given with -I options on the command line. This environment variable is used regardless of which language is being preprocessed. The remaining environment variables apply only when preprocessing the particular language indicated. Each specifies a list of directories to be searched as if specified with -isystem, but after any paths given with -isystem options on the command line. but i read (past and present tense) this as saying that C_INCLUDE_PATH is searched *after* any -Idir statements on the command lines (in which case, the -Idir statements Sage puts on the command line would have had the local directories searched before these). do you know, are they, in fact, search *before* the -Idir? that would certainly explain it. cheers, Greg -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
[sage-support] Re: problem building 5.4.1 on macosx 10.8.2
No its first -Idir, then *_INCLUDE_PATH, then the path thats hard-wired into the compiler. But since Sage builds its own compiler you are effectively overriding the search path. On Friday, December 14, 2012 3:13:06 PM UTC, Greg Minshall wrote: C_INCLUDE_PATH / CPLUS_INCLUDE_PATH are overriding the default gcc header search path. This is why compilation is failing. Did fink put in these system-wide environment variables? Thats seriously effed up. no, they come from my .bashrc. they've been there since 2008. sadly, i no longer remember (nor documented) the reason they ended up there. -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
[sage-support] Symbolic Calculation in Sage
Is there any function in Sage by which this kind of symbolic calculation is possible? s=0 for i=1 to m if(ia+t) s=s+2i else s=s+t m,a,t are non negative integers. -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
Re: [sage-support] Symbolic Calculation in Sage
On Fri, Dec 14, 2012 at 12:31 PM, Santanu Sarkar sarkar.santanu@gmail.com wrote: Is there any function in Sage by which this kind of symbolic calculation is possible? s=0 for i=1 to m if(ia+t) s=s+2i else s=s+t m,a,t are non negative integers. I have no idea what you're asking, but you might find this snippet of Sage code relevant: m = 10; a = 5; t = 3 s = 0 for i in [1..m]: if ia+t: s += 2*i else: s += t print s -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en. -- William Stein Professor of Mathematics University of Washington http://wstein.org -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
Re: [sage-support] Symbolic Calculation in Sage
On Fri, Dec 14, 2012 at 2:44 PM, Santanu Sarkar sarkar.santanu@gmail.com wrote: No, as s will be a function of a,m,t, I need that function. For my toy example it will be easy. You wrote s=0 right in your question, so I don't think I'll be able to help you further. I hope somebody else can. On 14 December 2012 14:37, William Stein wst...@gmail.com wrote: On Fri, Dec 14, 2012 at 12:31 PM, Santanu Sarkar sarkar.santanu@gmail.com wrote: Is there any function in Sage by which this kind of symbolic calculation is possible? s=0 for i=1 to m if(ia+t) s=s+2i else s=s+t m,a,t are non negative integers. I have no idea what you're asking, but you might find this snippet of Sage code relevant: m = 10; a = 5; t = 3 s = 0 for i in [1..m]: if ia+t: s += 2*i else: s += t print s -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en. -- William Stein Professor of Mathematics University of Washington http://wstein.org -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en. -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en. -- William Stein Professor of Mathematics University of Washington http://wstein.org -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
[sage-support] Re: problem building 5.4.1 on macosx 10.8.2
Volker, No its first -Idir, then *_INCLUDE_PATH, then the path thats hard-wired into the compiler. But since Sage builds its own compiler you are effectively overriding the search path. however, this doesn't explain the failure i was having, where gcc -c -I. -I../src/headers -I../src/language -I/Users/minshall/src/import/sage/sage-5.4.1/local/include -O3 -Wall -fno-strict-aliasing -fomit-frame-pointer -g -o gp_rl.o ../src/gp/gp_rl.c (i.e., with -I.../sage-5.4.1/local/include is on the command line) appears to have picked up the readline/readline.h from /usr/include, rather than from .../sage-5.4.1/local/include. or, am i missing something? (maybe i don't understand your second sentence?) Greg -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
[sage-support] Re: buggy integral
Hi, I was actually using a very old version of Sage (4.8). I have just tried with version 5.4.1 and... yes, it works perfectly now! I should have thought of upgrading Sage earlier I am sorry about that. Thank you, Undy Il giorno venerdì 14 dicembre 2012 15:01:10 UTC+1, kcrisman ha scritto: On Thursday, December 13, 2012 4:34:03 PM UTC-5, Emmanuel Charpentier wrote: I can't reproduce your problem (using the server at www.sagenb.org). I ask : Undy, is it possible that you have an older version of Sage? We do update Maxima (and hence our integration routines) periodically; in fact, we need to do so again. -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
[sage-support] Re: Symbolic Calculation in Sage
Santanu Sarkar sarkar.santanu@gmail.com writes: No, as s will be a function of a,m,t, You can't have imperative code in a symbolic function, if that's what you're asking. You can of course use an imperative (Python) function to do what you want:: def s(m, a, t): result = 0 for i in srange(1,m+1): if i a + t: s += 2*i else: s += t return result But now this function cannot be used in some places where a symbolic expression could. For example you will be hard pressed to plot a partial evaluation of it without some wrapping gymnastics. -Keshav -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
[sage-support] Re: problem building 5.4.1 on macosx 10.8.2
If the directory is already in the built-in search path (like /Users/minshall/src/import/sage/sage-5.4.1/local/include if you use the gcc that Sage compiled) then the -I option is ignored. -Idir Add the directory dir to the head of the list of directories to be searched for header files. This can be used to override a system header file, substituting your own version, since these directories are searched before the system header file directories. However, you should not use this option to add directories that contain vendor-supplied system header files (use -isystem for that). If you use more than one -I option, the directories are scanned in left-to-right order; the standard system directories come after. If a standard system include directory, or a directory specified with -isystem, is also specified with -I, the -I option will be ignored. The directory will still be searched but as a system directory at its normal position in the system include chain. This is to ensure that GCC's procedure to fix buggy system headers and the ordering for the include_next directive are not inadvertently changed. If you really need to change the search order for system directories, use the -nostdinc and/or -isystem options. http://gcc.gnu.org/onlinedocs/gcc-4.7.2/gcc/Directory-Options.html#Directory-Options On Friday, December 14, 2012 7:58:35 PM UTC, Greg Minshall wrote: Volker, No its first -Idir, then *_INCLUDE_PATH, then the path thats hard-wired into the compiler. But since Sage builds its own compiler you are effectively overriding the search path. however, this doesn't explain the failure i was having, where gcc -c -I. -I../src/headers -I../src/language -I/Users/minshall/src/import/sage/sage-5.4.1/local/include -O3 -Wall -fno-strict-aliasing -fomit-frame-pointer -g -o gp_rl.o ../src/gp/gp_rl.c (i.e., with -I.../sage-5.4.1/local/include is on the command line) appears to have picked up the readline/readline.h from /usr/include, rather than from .../sage-5.4.1/local/include. or, am i missing something? (maybe i don't understand your second sentence?) Greg -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
[sage-support] Re: problem building 5.4.1 on macosx 10.8.2
Volker, If the directory is already in the built-in search path (like /Users/minshall/src/import/sage/sage-5.4.1/local/include if you use the gcc that Sage compiled) then the -I option is ignored. ah! got it. so, the Sage-compiled gcc includes .../local/include as a standard system directory (and, is also on the command line via -I). that explains it. thanks! Greg -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
[sage-support] Re: Symbolic Calculation in Sage
On Friday, December 14, 2012 12:41:57 PM UTC-8, Keshav Kini wrote:
Santanu Sarkar sarkar.sa...@gmail.com javascript: writes:
No, as s will be a function of a,m,t,
You can't have imperative code in a symbolic function, if that's what
you're asking. You can of course use an imperative (Python) function to
do what you want::
def s(m, a, t):
result = 0
for i in srange(1,m+1):
if i a + t:
s += 2*i
else:
s += t
return result
Ah, so perhaps you want something along the lines of:
sage: var('i')
sage: s(m,a,t)=sum(2*i*heaviside(i-a*t)+t*heaviside(a*t-i),i,1,m)
I'm not sure whether sage can do anything useful with it. Also, the
heaviside step function in sage is undefined at the value where it steps.
Substitute with a cunning combination of max, min, floor, ceil, etc. to
create the step you want if you care for values where a*t is an integer.
--
You received this message because you are subscribed to the Google Groups
sage-support group.
To post to this group, send email to sage-support@googlegroups.com.
To unsubscribe from this group, send email to
sage-support+unsubscr...@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-support?hl=en.
[sage-support] unit test failure: expected …'dynamic_class.pyc', got …'dynamic_class.py'
I ran make check and this is what I got. This is on Ubuntu 12.04 HACK zompu:~/playground/sage/sage-5.4.1$ ./sage -t -force_lib devel/sage/sage/structure/dynamic_class.py sage -t -force_lib devel/sage/sage/structure/dynamic_class.py ** File /home/zooko/playground/sage/sage-5.4.1/devel/sage/sage/structure/dynamic_class.py, line 289: sage: inspect.getfile(Foo2) Expected: '.../sage/structure/dynamic_class.pyc' Got: '/home/zooko/playground/sage/sage-5.4.1/local/lib/python/site-packages/sage/structure/dynamic_class.py' ** File /home/zooko/playground/sage/sage-5.4.1/devel/sage/sage/structure/dynamic_class.py, line 291: sage: inspect.getfile(Foo3) Expected: '.../sage/structure/dynamic_class.pyc' Got: '/home/zooko/playground/sage/sage-5.4.1/local/lib/python/site-packages/sage/structure/dynamic_class.py' ** 1 items had failures: 2 of 22 in __main__.example_2 ***Test Failed*** 2 failures. For whitespace errors, see the file /home/zooko/.sage//tmp/dynamic_class_11687.py [14.4 s] -- The following tests failed: sage -t -force_lib devel/sage/sage/structure/dynamic_class.py Total time for all tests: 14.6 seconds -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
[sage-support] Re: unit test failure: expected …'dynamic_class.pyc', got …'dynamic_class.py'
Aha, it probably has to do with this environment variable that I have set: PYTHONDONTWRITEBYTECODE=1 I set this years ago in my bash init files in order to work-around some other bug in some other software package, the details of which I've now forgotten... -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
[sage-support] Re: unit test failure: expected …'dynamic_class.pyc', got …'dynamic_class.py'
On Friday, December 14, 2012 9:16:26 PM UTC-7, zooko wrote: Aha, it probably has to do with this environment variable that I have set: PYTHONDONTWRITEBYTECODE=1 Confirmed that unsetting PYTHONDONTWRITEBYTECODE, rerunning make, and then rerunning this test caused the test to pass. So, you could ignore this as a not-a-bug, or you could figure out how to make that test work even when the PYTHONDONTWRITEBYTECODE variable is set. Regards, Zooko -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
