search for: newexp

HI, As I'm trying to compute Taylor series, I'm having problems in adding and multiplying unevaluated expressions. I searched for a solution but found none. my Taylor function works fine for evaluating functions as you can see here: rTaylorVal=function(exp,x0,dx,n) { ls=list(x=x0) newexp=eval(exp,ls) exp0=exp for (i in 1:n){ exp0=D(exp0,"x") newexp=newexp+eval(exp0,ls)/factorial(i)*dx^i } return(newexp) } Where exp is an expression like exp=expression(x^2*sin(x)), x0 is the startvalue, dx the difference between startvalue and searched value and n is the length of the...

...rner at auckland.ac.nz> Referenzen: <20091201144125.316310 at gmx.net> <8E40E49F-E8FC-4FBD-8CC5-93789FFB0E53 at auckland.ac.nz> This works fine for your example, but doesn't work as simple if there's more than these expressions. In my example this would be in line 11: newexp=as.expression(substitute(a+con1/con2*b^con3,list(a=newexp[[1]],b=expression(dx)[[1]],con1=eval(exp0,ls),con2=factorial(i),con3=1*i))) this works just fine and you can still evaluate this. thank you very much! If there's an easier way, let me know. Greets, Ben M?ller Rolf Turner schrieb: &gt...

...ices with packets pending at "end" (tests/tcstimstp) - updated tests/basic, tests/tcssnap, tests/u32dlb, and tests/u32slb according to above change - -Wexpensive did not warn about implicit negation (tests/tcng-8z) - tcc: replaced -E with -Wexperror, and -E -E with -Wexppostopt (tests/newexp) - updated tests/bitfield, tests/bittest, tests/expensive, tests/ne, tests/tcng-5y, and tests/tcng-7a according to above change - tcc -E now runs cpp without any further processing (just like gcc -E; tests/tccin) - tcc: added option -f infile to read from specified file, ignoring input file a...