Matlab mod() function

Matlab mod() function is used to calculate the remainder after division.

Syntax: Matlab mod()

remainder = mod(dividend, divisor)

Here,

dividend – the number that is being divided
divisor – the number that the dividend is being divided by
remainder – the output of the function, which is the remainder of the division

Example: Find remainder using Matlab mod()

% calculate remainder 
remainder = mod(23,5)

Output

You can also find the remainder of an array by dividing each element with a divisor. For example,

% create an array 
a = [5, 7, 11, 15];

% calculate the remainder of each element 
remainder = mod(a, 3)

Output

2     1     2     0

The above code returns a new array, with the remainder of the corresponding element of array a.

You can also find the remainder of an array that has both positive and negative values using Matlab mod(). For example,

% create an array 
array = [-4 -1 7 9];

% define the divisor as 3
divisor = 3;

% calculate the remainders 
remainders = mod(array, divisor)

Output

2     2     1     0

If the divisor is positive the resulting array of the remainder is always positive.

You can find the remainder after division by a negative divisor for a set of integers including both positive and negative values. For example,

% create an array 
array = [-4 -1 7 9];

% define the divisor 
divisor = -3;

% calculate remainders 
remainders = mod(array, divisor)

Output

-1    -1    -2     0

Here is an example of using the mod() function to calculate the remainder after division for floating-point values in MATLAB:

dividend = 5.5;
divisor = 2.5;
remainder = mod(dividend, divisor)

Output

0.5000