Vega FEM Library (v1.1) User's Manual - University of Southern ...

2.15 matrix
Provides functions to write and read dense matrices to and from a file. The templated functions, where type
real may be float or double, operate on real-typed matrices stored as column-major arrays. If an error
occurs, functions ending in an underscore exit with non-zero status, and functions without an underscore
return a non-zero integer.
int ReadMatrixFromDisk(char* filename, int * m, int * n, real ** matrix)
int ReadMatrixFromDisk (char* filename, int * m, int * n, real ** matrix)
Reads a binary-format matrix from filename into a newly-allocated (malloc) array, writes the pointer
to this array to *matrix, and writes the matrix dimensions to *m and *n. An error occurs if the file reports
a different matrix size or if file IO fails.
int WriteMatrixToDisk(char* filename, int m, int n, real * matrix)
int WriteMatrixToDisk (char* filename, int m, int n, real * matrix)
Writes an m-by-n matrix stored in the array matrix to filename. An error occurs if file IO fails.
int ReadMatrixFromDiskTextFile(char* filename, int * m, int * n, real ** matrix)
int WriteMatrixToDiskTextFile(char* filename, int m, int n, real * matrix)
Read and write matrices similarly to ReadMatrixFromDisk and WriteMatrixToDisk, but encode the
float or double values in text format.
int ReadMatrixFromDiskListOfFiles(char * fileList, int * m, int * n, real ** matrix)
Concatenates the columns of the matrices from several (binary-format) matrix files into a single matrix.
The file of name fileList is read, and each line of the file is assumed to be a matrix filename. Each of
these matrices must have the same number of rows. The resulting concatenation is written to *matrix, and
its dimensions are written to *m and *n.
2.16 minivector
class Vec2d Provides basic functionality for two-dimensional vectors with double-valued coordinates.
Overloads addition and subtraction of vectors, scalar (pre- and post-)multiplication and division, equality
testing, [] member access, and