epsilon — Compute machine epsilon
epsilon calculates the epsilon of this machine. Epsilon
is defined as the largest number you can add to 1 and get a
result that is indiscernable from 1. There is a variable,
eps, that is automatically placed into the global symbol table
by the default .rlab file. You may find the variable more
convenient to use than the function, and the expense of possible
portablity problems.
This is not an built-in function. This function
is normally loaded on start-up from the epsilon.r file in the
standard rlib directory. Use of the -r option, incorrectly
setting the RLAB_LIB_DIR environmental variable, or modifying
epsilon.r may make this function unavailable.
Subsections