Modulo

The modulo operator provides the remainder when two operands of integer type are divided. Modulo operaitons are susceptible to division-by-zero errors.

Non-compliant Code Example

The following code can result in a divide-by-zero error during the modulo operation on the signed operands sl1 and sl2.

signed long sl1, sl2, result;

result = sl1 % sl2;

Compliant Solution

The following compliant solution tests the suspect modulo operation to guarantee there is no possibility of a divide-by-zero error.

signed long sl1, sl2, result;

if (sl2 == 0) {
  /* handle error condition */
}
result = sl1 % sl2;