Comparison operators

### 4.1.2 Comparison operators

The usual comparison operators between numbers are examples of tests. In Xcas, they are the following infixed operators:

- a==b tests the equality between a and b and returns 1 if a is equal to b and 0 otherwise.
- a!=b returns 1 if a and b are different and 0 otherwise.
- a>=b returns 1 if a is greater than or equal to b and 0 otherwise.
- a>b returns 1 if a is strictly greater than b and 0 otherwise.
- a<=b returns 1 if a is less than or equal to b and 0 otherwise.
- a<b returns 1 if a is strictly less than b and 0 otherwise.

##### Remark.

Note that a=b is not a boolean. This form is used to state that the expression is an equality, perhaps with the intent to solve it. To test for equality, you need to use a==b, which is a boolean.