Introduction - If you have any usage issues, please Google them yourself
Credits: Ian Kay, Canadian Geological Survey, Ottawa, Ontario 1999.
This is a translation in C from an code written in Fortran that appeared
in NETLIB, EISPACK, and SLATEC collections that was itself a translation
from an original Algol code that appeared in:
Golub, G. and C. Reinsch (1971) Handbook for automatic computation II,
linear algebra, p 134-151. SpringerVerlag, New York.
See also discussions of a similar code in Numerical Recipes in C.
svd_sort: Nils Maercklin, GeoForschungsZentrum (GFZ) Potsdam, Germany, 2001.