Precisione
Le parole dei computer sono costituite da un numero finito di bit. Questo significa che la codifica binaria delle variabili è solo un'approssimazione di un valore reale arbitrariamente preciso. Pertanto, le limitazioni della rappresentazione binaria introducono automaticamente limitazioni sulla precisione del valore.
Argomenti
- Range and Precision
Range and precision of fixed-point data types.
- Maximize Precision
To maximize precision, make the slope as small as possible while keeping the range adequately large.
- Rounding Modes
Rounding involves going from high precision to lower precision and produces quantization errors and computational noise. Fixed-Point Designer™ provides seven rounding modes.
- Net Slope and Net Bias Precision
Net slope and bias precision, detecting precision loss, underflow, and overflow.
- Detect Fixed-Point Constant Precision Loss
This example shows how to detect fixed-point constant precision loss.
- Use Scaled Doubles to Avoid Precision Loss
How to avoid precision loss by overriding the data types in your model with scaled doubles.
Esempi in primo piano
Compute Quantization Error
Compute and compare the statistics of the signal quantization error when using various rounding methods.
