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Arithmetic type - Operands REFERENCE - ISO:C90-6.3.3.3 Unary Arithmetic Operators

The operand of this logical negation operator (!) is derived from a bitwise or arithmetic operator. This is probably a mistake; perhaps a bitwise AND (&) or bitwise OR (|) was intended ?

For example: 


/*PRQA S 2017,3198,3199,3203,3227,3408 ++*/

extern void foo(unsigned int a, unsigned int b)
{
    int r;

    r = !(a || b);                    /* OK */

    r = !(a | b);                     /* Message 4110 */

}

QA·C Source Code Analyser 8.1.2
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