MeijerG 1.0

A wrapper for MATLAB symbolic library implementation of the 'MeijerG' G^{m,n}_{p,q}(...|z) function.Syntax : MeijerG({[a_1,...a_n],[a_n+1,...a_p]},{[b_1,...b_m], [b_m+1,...b_q]},z)Input arguments :a - {[a_1,...a_n],[a_{n+1},...a_p]}b - {[a_1,...a_m],[a_{m+1},...a_q]}z - matrix of (possibly complex) numbersOutput:y - has same dimensions as 'z'1.) For invalid arguments, 'double' function for converting results back from symbols would return an error. 'MeijerG' catches the error, displays a warning, and sets corresponding position of 'y' to 'nan'.2.) 'double' to 'string' conversion used for forming the symbolic expressions causes a precision loss, and possibly, round of errors.3.) Sometimes, even the slightest changes to arguments could produce unacceptable results.e.g.>> MeijerG({[1,1], []},{1, 1},[1,2,3])ans = NaN 0.666666666666667 0.750000000000000>> MeijerG({[1,1], []},{1, 1},[1+1e-5,2,3])ans = 0.500002499987500 0.666666666666667 0.750000000000000Here the second result appears correct, since MeijerG({[1,1], []},{1, 1},z ) = z/(z+1).Please let me know if such issues can be circumvented.

Requirements:	No special requirements
Platforms:	Matlab
Keyword:	039y039,  Errors,  Expressions,  Precision,  Round,  Slightest
Users rating:	0/10