资源说明:A compilation of matricial functions
MatrixLib ========= Brief overview: Matrix library written in C that is able to manage bidimensional matrices and provide information about them. It is possible to operate with the basic functions such as inversion, transposition, multiplication and determinant. Features: + single matrix struct containing: - float matrix - size - properties in Boolean format + ordered list manager: - add matrices with the following options: * input manually * initialise as identity * initialise with one number - remove them from memory - show single matrices - show the complete list of matrices + autosave and autoload matrices for later usage + functions that inform if a matrix is: - symmetrical - antisymmetrical - triangular - diagonal - identity - orthogonal + functions that operate with a single matrix: - opposite - transpose - adjugate - invert - multiply (by a scalar number) + functions that operate with two matrices - add/subtract - multiply - multiply/divide like addition/subtraction - copy - check equality History: I began coding this library in July 2011, when I had half a year of coding in C experience. But back then I started with a program that only calculated the determinant of any given square matrix. It used float pointers and an int to know the size. In September I decided to go a step further and incorporate other matrix functions, as well as structs for ease of use, having the pointer and size in a single variable. To-do list: - "translate" into Obj-C, into iPhone app. - functions for column and row spaces. - resolve n eqs with n vars (using Cramer and the inverse of A in A*X=B, X=Inv(A)*B. - make mflib.c into dylib, opening the way to a plugin system. - modify mtxlib.c functions so that they take an int and a matrix array. then, functions like addition can add several matrices at a time. - add a zero sign checker so as to not have -0 values - make mtxnode have (void*)data so it is reusable
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