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1 Configuration Parameters Dialog Box Signed integer division rounds to Describe how your compiler for the production hardware rounds the result of dividing two signed integers. Settings Default: Undefined Undefined Choose this option if neither Zero nor Floor describes the compiler's behavior, or if that behavior is unknown. Zero If the quotient is between two integers, the compiler chooses the integer that is closer to zero as the result. Floor If the quotient is between two integers, the compiler chooses the integer that is closer to negative infinity. Tips • Use the Integer rounding mode parameter on your model's blocks to simulate the rounding behavior of the C compiler that you use to compile code generated from the model. This setting appears on the Signal Attributes pane of the parameter dialog boxes of blocks that can perform signed integer arithmetic, such as the Product block. • For most blocks, the value of Integer rounding mode completely defines rounding behavior. For blocks that support fixed-point data and the Simplest rounding mode, the value of Signed integer division rounds to also affects rounding. For details, see “Rounding”. • See Hardware Implementation Options in the Simulink Coder documentation for information on how this option affects code generation. • The following table illustrates the compiler behavior described by the options for this parameter. 1-416 N D Ideal N/D Zero Floor Undefined 33 4 8.25 8 8 8 -33 4 -8.25 -8 -9 -8 or -9
