SEROUND: Round value and standard error

SEROUND: Round value and standard error

First, se is rounded to 1 significant figure. Next,
x is rounded to the same significant figure as se.

Returns a string suitable for output using fprintf or
other tools. Also returns the rounded values if
desired.

Usage:
[s, xRound, seRound] = seround(x, se, [lim])
x: value to be rounded
se: standard error of x
lim: do not use scientific notation below this
order of magnitude (optional, default=2)

See also: ROUND, FLOOR, CEIL