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what is this type "sfix16_Sp1_Bn25"

11 vues (au cours des 30 derniers jours)
dayoung
dayoung le 30 Sep 2024
What is
"sfix16_Sp1_Bn25" this type mean for?

Réponses (2)

Manish
Manish le 30 Sep 2024
Hi dayoung,
Here is the breakdown of the data type:
  • sfix: Signed Fixed-Point data type.
  • S: slope
  • P: Decimal point
  • B: Bias
  • n: Negative
Therefore, "sfix16_Sp1_Bn25" describes a signed 16-bit fixed-point number with a slope of 0.1 and a bias of -25.
Here is the documentation link:
Hope it helps!

Andy Bartlett
Andy Bartlett le 1 Oct 2024
Modifié(e) : Andy Bartlett le 1 Oct 2024
Tip: Feed Simulink Type Name to numerictype
If the type name corresponds to a numeric type (not a Bus, Enum, Alias, or user custom type), then feed the string to numerictype to get a numerictype object that explains the details.
nt1 = numerictype("sfix16_Sp1_Bn25")
nt1 = DataTypeMode: Fixed-point: slope and bias scaling Signedness: Signed WordLength: 16 Slope: 0.1 Bias: -25
nt2 = numerictype("ufix7_En5")
nt2 = DataTypeMode: Fixed-point: binary point scaling Signedness: Unsigned WordLength: 7 FractionLength: 5
nt3 = numerictype('single')
nt3 = DataTypeMode: Single
Tip 2: fixed.extractNumericType can also be used and is more general
fixed.extractNumericType can convert many inputs to its numerictype object. See it's help for more info.
nt4 = fixed.extractNumericType('half')
nt4 = DataTypeMode: Half
nt5 = fixed.extractNumericType("flts8_E6")
nt5 = DataTypeMode: Scaled double: binary point scaling Signedness: Signed WordLength: 8 FractionLength: -6
Tip 3: fixdt also works except for scaled doubles
nt6 = fixdt('sfix123_S4_B5')
nt6 =
NumericType with properties: DataTypeMode: 'Fixed-point: slope and bias scaling' Signedness: 'Signed' WordLength: 123 Slope: 4 Bias: 5 IsAlias: 0 DataScope: 'Auto' HeaderFile: '' Description: ''

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