"Square" function in formula node

Actually x*x is even preferable to x**2 for two reasons:

1) It's faster. x**2 computes the log(x) using a polynomial series,

multiplies the log by 2 and then exponentiates this value using

another polynomial series.

2) It's more accurate: Polynomial series have errors depending on the

number of terms that are used that are much higher than what you get

by a single multiply.

Of course with math coprocessors or built in MPU's in today's CPU's a

lot of this is implemented in hardware on the chip so speed is a lot

less of a factor than it used to be in the good old days but the

relative accuracy of x*x vs. x**2 should still be true.

Doug De Clue

LabVIEW programmer

Quote:

> Hi,

> x^2 is written as x**2. But x*x also works ;)

> Regards,

> Wiebe.

> > The square(x) function in the formula node does not seem to work, can

> > someone confirm, or give me some example syntax?

> > LabVIEW 6.1, Win2K