ult in the lib*.scm files is to use the C name as the Scheme name.
This collides with (for example) the widespread use of "-", rather than "_" in Scheme, but
I have found it much more straightforward to stick with one name.  In cases like
libgsl there are thousands of names, all documented at great length
by the C name. Anyone who wants to use these functions has to start with the C name.
If they are forced to fuss with some annoying Schemely translation of it,
the only sane response is: "forget it! I'll do