In-line rounding refers to the process of adjusting numerical values to the nearest whole number or decimal place within a given system or program, without interrupting the flow of data or calculations. This method allows for efficient and accurate rounding, as it is performed automatically as part of the overall process, rather than as a separate step. In-line rounding is commonly used in computer programming, data analysis, and financial calculations, and helps to streamline and simplify complex numerical operations.