Section: Base Constants
feps, which quantifies the relative machine precision
of floating point numbers (a machine specific quantity). The syntax
for feps is:
y = feps
which returns feps for single precision values. For most
typical processors, this value is approximately 2^-24, or 5.9604e-8.
feps function,
and one of its numerical consequences.
--> feps ans = 1.1921e-07 --> 1.0f+eps ans = 1