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+---- Thread: Rule 19.4 (/showthread.php?tid=237)
Rule 19.4 - aravind - 31-03-2006
Is the usage of ternary operator (? :) inside a C macro violation of rule 19.4. For e.g. the following function-like macro
#define abs(x) (((x) >= 0) ? (x) : -(x))
According to Rule 19.4 - C macros shall only expand to a braced initialiser, a constant, a parenthesized expression, a type qualifier, a storage class specifier or a do-while construct.
Does the above function-like macro conform to rule 19.4?
- misra-c - 27-04-2006
The macro containing the ternary operator expands to a parenthesized expression and therefore is allowed.