On Wednesday, June 20, 2018 at 10:12:24 AM UTC-7, Richard_L wrote: > > ..."domain:complex" is not the default for which code: Maxima or Sage? >
it's a maxima command, so: default for maxima. Sage uses maxima with non-default settings. > > Sage's documentation [ > https://doc.sagemath.org/html/en/reference/calculus/sage/calculus/var.html] > states > > By default, var returns a complex variable. To define real or positive >> variables we can specify the domain as: ... >> > > My understanding of the implementation (although I cannot find it in the > code) is that Sage sets up "domain:complex" for Maxima quite early.The fact > that we can override this in the first few lines of the script (above the > variable declarations) indicates to me that it happens before I get the > sage prompt. (Otherwise the override would get stomped on.) > Strictly speaking: not before the prompt. The maxima-_lib library only gets initialized upon the first call (you can notice this by the time it takes to do the first operation in a session that uses maxima). However, the interface is initialized by the time maxima_calculus.eval(...) gets to do its thing, so therefore the setting survives. The code is here: https://github.com/sagemath/sage/blob/854f9764d14236110b8d7f7b35a7d52017e044f8/src/sage/interfaces/maxima_lib.py#L167 -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
