Re: Mathlink and BorlandC++

*To*: mathgroup at smc.vnet.net*Subject*: [mg30411] Re: Mathlink and BorlandC++*From*: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>*Date*: Fri, 17 Aug 2001 03:09:51 -0400 (EDT)*Organization*: Universitaet Leipzig*References*: <9ld14v$2fa$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Hi, a) you are the first person that wish to use a numeric differential equation solver form a C-programm. Strange, I have always implemented and seen the other direction. There are hundreds of fast an easy to use C-librarys with initial value solvers. b) Say you want to send {y'[x]==-y[x], y[0]==1} MLPutFunction(alink,"List",2); MLPutFunction(alink,"Equal",2); MLPutFunction(alink,"D",2); MLPutFunction(alink,"y",1); MLPutSymbol(alink,"x"); MLPutSymbol(alink,"x"); MLPutFunction(alink,"Times",2); MLPutInteger(alink,-1); MLPutFunction(alink,"y",1); MLPutSymbol(alink,"x"); MLPutFunction(alink,"Equal",2); MLPutFunction(alink,"y",1); MLPutSymbol(alink,"x"); MLPutInteger(alink,1); c) have a lot of fun with the InterpolationFunction[] returned by DNSolve[] in your C-program ;-) Regards Jens konraad dullaert wrote: > > Hey, > > I'm writting a program in Borland where I need to solve a differential > equation (have to use NDSolve). > After opening a link to Mathlink, you have to put the function that you want > to use. > > MLPutFunction (alink, "NDSolve, 3) > > But how do I send the two equations (namely the differential equation and the > initial value) and the interval in which the equation has to solved to the > Mathematica Kernel? > > Thanks for the effort, > > Konraad