Division by zero: Undefined Behavior or Implementation Defined in C and/or C++?

by

I don’t see any contradiction. Division by zero is undefined, period. There is no mention of “… unless INFINITY is defined” anywhere in the quoted text.

Note that nowhere in mathematics it is defined that 1 / 0 = infinity. One might interpret it that way, but it is a personal, “shortcut” style interpretation, rather than a sound fact.

More Related Contents:

  1. The behaviour of floating point division by zero
  2. What is the strict aliasing rule?
  3. C++ delete – It deletes my objects but I can still access the data?
  4. Why is unsigned integer overflow defined behavior but signed integer overflow isn’t?
  5. Do I need to cast to unsigned char before calling toupper(), tolower(), et al.?
  6. Is uninitialized local variable the fastest random number generator?
  7. May I treat a 2D array as a contiguous 1D array?
  8. Why does left shift operation invoke Undefined Behaviour when the left side operand has negative value?
  9. Undefined behavior and sequence points reloaded
  10. Why do constant expressions have an exclusion for undefined behavior?
  11. How is a variable at the same address producing 2 different values? [duplicate]
  12. Why dereferencing a null pointer is undefined behaviour?
  13. Why should I not try to use “this” value after “delete this”?
  14. Can’t Mod Zero?
  15. Why is out-of-bounds pointer arithmetic undefined behaviour?
  16. C++ compilation bug?
  17. Why is initialization of a new variable by itself valid? [duplicate]
  18. Is this infinite recursion UB?
  19. Implementing a std::vector like container without undefined behavior
  20. Is pointer comparison undefined or unspecified behavior in C++?
  21. new() without delete() is Undefined Behavior or merely Memory Leak? [duplicate]
  22. Why is the phrase: “undefined behavior means the compiler can do anything it wants” true?
  23. Why does printf(“%f”,0); give undefined behavior?
  24. Near constant time rotate that does not violate the standards
  25. Are pointer variables just integers with some operators or are they “symbolic”?
  26. At what point does dereferencing the null pointer become undefined behavior?
  27. Undefined behavior causing time travel
  28. Setting extra bits in a bool makes it true and false at the same time
  29. When a float variable goes out of the float limits, what happens?
  30. Dangling references and undefined behavior

Leave a Comment