Fixed-Point Toolbox™

Display Settings

In Fixed-Point Toolbox software, the display of fi objects is determined by the fipref object. Throughout this User's Guide, code examples of fi objects are usually shown as they appear when the fipref properties are set as follows:

• NumberDisplay — 'RealWorldValue'

• NumericTypeDisplay — 'full'

• FimathDisplay — 'none'

For example,

p = fipref('NumberDisplay', 'RealWorldValue',... 
'NumericTypeDisplay', 'full', 'FimathDisplay', 'none')
 
p =
 
         NumberDisplay: 'RealWorldValue'
    NumericTypeDisplay: 'full'
         FimathDisplay: 'none'
           LoggingMode: 'Off'
      DataTypeOverride: 'ForceOff'

a = fi(pi)
 
a =
 
    3.1416


          DataTypeMode: Fixed-point: binary point scaling
                Signed: true
            WordLength: 16
        FractionLength: 13

In other cases, it makes sense to also show the fimath object display:

• NumberDisplay — 'RealWorldValue'

• NumericTypeDisplay — 'full'

• FimathDisplay — 'full'

For example,

p = fipref('NumberDisplay', 'RealWorldValue',... 
'NumericTypeDisplay', 'full', 'FimathDisplay', 'full')
 
p =
 
         NumberDisplay: 'RealWorldValue'
    NumericTypeDisplay: 'full'
         FimathDisplay: 'full'
           LoggingMode: 'Off'
      DataTypeOverride: 'ForceOff'

a = fi(pi)
 
a =
 
    3.1416

          DataTypeMode: Fixed-point: binary point scaling
                Signed: true
            WordLength: 16
        FractionLength: 13

             RoundMode: nearest
          OverflowMode: saturate
           ProductMode: FullPrecision
  MaxProductWordLength: 128
               SumMode: FullPrecision
      MaxSumWordLength: 128
         CastBeforeSum: true

For more information, refer to Working with fipref Objects.

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