Re: unwrap modulo 2pi

[Craig Markwardt <craigmnet(at)cow.physics.wisc.edu>]

"Wim G. Bouwman" <w.g.bouwman@iri.tudelft.nl> writes:

> Dear Graham,
> The function is written in PV-WAVE and NINT is a standard function giving
> the integer value as a long.  I am sure that something similar does exist
> in IDL.
> In PV-WAVE you have also FIX, which returns the integer value as an
> integer.

Just curious, how does NINT do the rounding?  In IDL there are FLOOR,
CEIL and ROUND which have well-behaved rounding properties (round up,
down and to-nearest, respectively).  The well-known LONG function is
not consistent depending on the sign of its argument.

Craig

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Craig B. Markwardt, Ph.D.         EMAIL:    craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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