#2452: [with patch, needs work] Heaviside step function, Dirac delta needed
-----------------------------------------+----------------------------------
Reporter: gfurnish | Owner: gfurnish
Type: enhancement | Status: assigned
Priority: major | Milestone: sage-4.1
Component: symbolics | Keywords:
Reviewer: David Joyner, Burcin Erocal | Author: Golam Mortuza Hossain
Merged: |
-----------------------------------------+----------------------------------
Comment(by rlm):
The second patch needs to be rebased. The following hunk fails, applying
to my 4.1.rc0 branch:
{{{
--- random_tests.py
+++ random_tests.py
@@ -202,12 +202,11 @@
sage: from sage.symbolic.random_tests import *
sage: random_expr(50, nvars=3,
coeff_generator=CDF.random_element)
- ceil(arctanh(-sinh(v2)/floor(-(0.615863165633 +
0.879368031485*I)*v1^2*v3) - gamma(pi) + floor(-(0.708874026302
- 0.954135400334*I)*v3)))^sinh(arctan2(arcsinh((0.723896589334 +
0.799038508886*I)*(v2 + 0.913564344312 + 0.08980401603
36*I)*v2), -1/v3)/(v3/v2 + 1.36062750308 - 1.05383406182*I))
+ arctanh(sinh(-arcsech(v2)/floor(-(0.615863165633 +
0.879368031485*I)*v1^2*v3) - gamma(pi) + floor(-(0.708874026
302 - 0.954135400334*I)*v3)))^arcsech(-cosh(-polylog((v2 + 0.913564344312
+ 0.0898040160336*I)^(-(0.723896589334 - 0.799
038508886*I)*v2),-v1 - v3))/sin(-(0.0263902659909 +
0.153261789843*I)*arctan2(pi, e^pi)))
sage: random_expr(5, verbose=True)
- About to apply sec to [1]
- About to apply exp to [sec(1)]
- About to apply <built-in function mul> to [e^sec(1), v1]
- v1*e^sec(1)
+ About to apply <built-in function add> to [v1, v1]
+ About to apply <built-in function div> to [-1/3, 2*v1]
+ -1/6/v1
"""
vars = [(1.0, sage.calculus.calculus.var('v%d' % (n+1))) for n in
range(nvars)]
if ncoeffs is None:
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/2452#comment:21>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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