Uses quantization to convert floating-point inputs to integer outputs. Quantization transforms real floating-point numbers into integers. You can use quantencode to solve overflow problems.
y = quantencode(x, n)
y = quantencode(x, n, r)
y = quantencode(x, n, r, s)Legacy name: uencode
Real numbers to encode. The elements of x must fall in the range [-r, r]. MathScript treats the elements outside of this range as overflows and saturates the overflows.
Level of quantization. n is a positive integer between 2 and 32. If n is in the range [2, 8], the output data type is int8/uint8. If n is in the range [9, 16], the output data type is int16/uint16. If n is in the range [17, 32], the output data type is int32/uint32.
Range of x. r is a positive number.
Data type of the outputs. s accepts the following values.
Directs MathScript to output signed integers with magnitudes in the range [-2^(n-1), 2^(n-1)-1].
Directs MathScript to output unsigned integers with magnitudes in the range [0, 2^n-1].
quantencode does not accept complex inputs. To encode and decode a complex x, use quantencode and quantdecode separately on the real and imaginary parts of x and then combine the results, as shown in the following example:
X = real (input) %get the real part of the input
Y = imag (input) %get the imaginary part of the input
X = quantencode (X, 4, 1, 'unsigned') %encode X
Y = quantencode(Y, 4, 1, 'unsigned') %encode Y
X = quantdecode (X, 4, 1, 'wrap') %decode X
Y = quantdecode (Y, 4, 1, 'wrap') %decode Y
output = complex (X, Y) %combine the real and imaginary parts
X = -1:0.01:1; Y = quantencode(X, 4, 1, 'signed'); X1 = quantdecode(Y, 4, 1); plot(X, X1)
Where This Node Can Run:
Desktop OS: Windows
FPGA: This product does not support FPGA devices