gluenumberstring() is the inverse of breaknumberstring.

breaknumberstring() breaks a number string into it's above and below decimal
parts, returning both and a bool for whether the number is negative

rescalestring() scales a string value by a specified number of units, similar
to the former rescaleunit()

scalestring() takes a number in string format and scales it like the
old scaleforunit(). By working with strings it sidesteps the entire
floating point inaccuracy problem.

Use spaces, not tabs.

All sign-conversion warnings fixed, except 2 weird ones in Bison...

All tests pass.

All tests pass.

tests still pass.

And cuddle up some braces.

No need with working tests.

libparse/ieee754io should be basically tested now.

floats were not allowed to be as big as they can be.

The tests need pylib installed first to run.  Not good.

Most system do not have libisc installed.

pos infinity found a bug in the libparse.