2007/12/11, Stef Euskadi <[EMAIL PROTECTED]>: > Good evening all !! > > I am looking for a open source mathematical library, written in C that does > the following job : > > Suppose the formula : sin ( a + cos ( 1 + 2 x phi ) ^2 ) > > The output of the library is a double-linked list of C structures that > enables > me to compute the result as fast as possible : > > \--- sin > \-- ADD > \-- a > \-- pow > \-- 2 > \-- cos > \-- ADD > \-- 1 > \-- MULT > \-- 2 > \-- phi > > Any idea before I start coding something ??
Nope no idea. Do you want to "parse" the fomula from file or do you want a way to "represent" the formula ? I'm not sure the double linked list is an efficient way to implement the formula. Depending on the complexity of your formula you may use RPN representaion (http://en.wikipedia.org/wiki/Reverse_Polish_notation) with only 2 stacks 1 for the operators/functions and one for operand. Evaluation algorithm using this is usually both easy and fast. However if you plan to do realtime computation for each sample you get with this... I don't know how much CPU time it would crunch. Could you explain your requirements a little? -- Erk _______________________________________________ Tsp-devel mailing list Tsp-devel@nongnu.org http://lists.nongnu.org/mailman/listinfo/tsp-devel
