Arithmetic operation

Although Equation 2.45 looks simple, it involves more arithmetic operations as compared to Equations 2.36 and 2.38.

A key feature of the IEEE standard is that it requires correctly rounded operations, specifically: • correctly rounded arithmetic operations (add, subtract, multiply, divide); • correctly rounded remainder and square root operations; • correctly rounded format conversions.

PHP enables you to do arithmetic operations on numbers. You indicate arithmetic operations with two numbers and an arithmetic operator. For instance, one operator is the plus (+) sign, so you can indicate an arithmetic operation like this: 1 + 2