Documentation |
Right-array division (./)
c = rdivide(a,b)
c = a./b
c = rdivide(a,b) and c = a./b perform right-array division by dividing each element of a by the corresponding element of b. If inputs a and b are not the same size, one of them must be a scalar value.
The numerator input a can be complex, but the denominator b requires a real-valued input. If a is complex, the real and imaginary parts of a are independently divided by b.
The following table shows the rules used to assign property values to the output of the rdivide function.
Output Property | Rule |
---|---|
Signedness | If either input is Signed, the output is Signed. If both inputs are Unsigned, the output is Unsigned. |
WordLength | The output word length equals the maximum of the input word lengths. |
FractionLength | For c = a./b, the fraction length of output c equals the fraction length of a minus the fraction length of b. |
The following table shows the rules the rdivide function uses to handle inputs with different data types.
Case | Rule |
---|---|
Interoperation of fi objects and built-in integers | Built-in integers are treated as fixed-point objects. For example, B = int8(2) is treated as an s8,0 fi object. |
Interoperation of fi objects and constants | MATLAB^{®} for code generation treats constant integers as fixed-point objects with the same word length as the fi object and a fraction length of 0. |
Interoperation of mixed data types | Similar to all other fi object functions, when inputs a and b have different data types, the data type with the higher precedence determines the output data type. The order of precedence is as follows:
When both inputs are fi objects, the only data types that are allowed to mix are ScaledDouble and Fixed-point. |
In this example, you perform right-array division on a 3-by-3 magic square of fi objects. Each element of the 3-by-3 magic square is divided by the corresponding element in the 3-by-3 input array b.
a = fi(magic(3)) b = int8([3 3 4; 1 2 4 ; 3 1 2 ]) c = a./b
The mrdivide function outputs a 3-by-3 array of signed fi objects, each of which has a word length of 16 bits and fraction length of 11 bits.
a = 8 1 6 3 5 7 4 9 2 DataTypeMode: Fixed-point: binary point scaling Signedness: Signed WordLength: 16 FractionLength: 11 b = 3 3 4 1 2 4 3 1 2 c = 2.6665 0.3335 1.5000 3.0000 2.5000 1.7500 1.3335 9.0000 1.0000 DataTypeMode: Fixed-point: binary point scaling Signedness: Signed WordLength: 16 FractionLength: 11