64 bit integer and c

Comments

• Lundin

  November 2007

  int isn't 32 bit. int is larger or equal to short. This is what you know:
  
  char = 1 byte
  wchar_t = 2 bytes
  
  char < short <= int <= long <= long long
  
  The types "wchar_t" and "long long" are only supported in the latest C standard ISO 9899:1999, also known as "C99".
• IDK

  November 2007

  Exactly, but if you like you could do something like this:
  [code]
  #if sizeof(int) == 8
  #define int64 int
  #elseif sizeof(long) == 8
  #define int64 int
  ...
  #endif
  [/code]
  
  Also it was a long time since I wrote preprocessor code...
  It could (should) be wrong.
  
  EDIT: If the compiler can use 64 bit, it will...
• Lundin

  November 2007

  [b]#elif[/b] sizeof(long) == 8
  
  Yeah, the pre-processor has strange syntax :-)