IntSizeof

Sizeof of standard types (from stdint.h and limits.h) for preprocessor.

stdint.h:

• INTSIZEOF_PTRDIFF == sizeof(ptrdiff_t)
• INTSIZEOF_SIZE == sizeof(size_t)
• INTSIZEOF_SIG_ATOMIC == sizeof(sig_atomic_t)
• INTSIZEOF_WCHAR == sizeof(wchar_t)
• INTSIZEOF_WINT == sizeof(wint_t)
• INTSIZEOF_CHAR == sizeof(char)

limits.h (signed):

• INTSIZEOF_SCHAR == sizeof(signed char)
• INTSIZEOF_SHRT == sizeof(signed short)
• INTSIZEOF_INT == sizeof(int)
• INTSIZEOF_LONG == sizeof(long)
• INTSIZEOF_LLONG == sizeof(long long)

limits.h (unsigned):

• INTSIZEOF_UCHAR == sizeof(unsigned char)
• INTSIZEOF_USHRT == sizeof(unsigned short)
• INTSIZEOF_UINT == sizeof(unsigned int)
• INTSIZEOF_ULONG == sizeof(unsigned long)
• INTSIZEOF_ULLONG == sizeof(unsigned long long)

Usage

IntSizeof can be installed by Hunter package manager:

hunter_add_package(Intsizeof)
find_package(Intsizeof CONFIG REQUIRED)
add_library(boo boo.cpp)
target_link_libraries(boo PUBLIC intsizeof::intsizeof)

C++ example:

#include <intsizeof.h> // INTSIZEOF_LONG
#include <iostream> // std::cout

int main() {
#if INTSIZEOF_LONG == 4
  std::cout << "sizeof long is 4" << std::endl;
#else
  std::cout << "sizeof long is not 4" << std::endl;
#endif
  return EXIT_SUCCESS;
}

Hints

C11 draft:

• http://port70.net/~nsz/c/c11/