Name

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      FPUFIX

Purpose

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      This is a utility routine to examine a variable and fix problems
      that will create floating point underflow errors.

Author

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      FANNING SOFTWARE CONSULTING
      David Fanning, Ph.D.
      1645 Sheely Drive
      Fort Collins, CO 80526 USA
      Phone: 970-221-0438
      E-mail: david@idlcoyote.com
      Coyote's Guide to IDL Programming: http://www.idlcoyote.com

Category

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      Utilities

Calling Sequence

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      fixedData = FPUFIX(data)

Arguments

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      data : A numerical variable to be checked for values that will cause
                      floating point underflow errors. Suspect values are set to 0.

Keywords

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      None.

Return Value

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      fixedData: The output is the same as the input, except that any values that
                    will cause subsequent floating point underflow errors are set to 0.

Common Blocks

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      None.

Examples

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      data = FPTFIX(data)

Restrictions

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    None.

Modification History

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      Written by David W. Fanning, from Mati Meron's example FPU_FIX. Mati's
          program is more robust that this (ftp://cars3.uchicago.edu/midl/),
          but this serves my needs and doesn't require other programs from
          Mati's library. 24 February 2006.