claasbontus/const_types

Const correctness made easier

const_types: Const correctness made easier

The importance of const correctness is a well known fact. const_types.h is a simple header file containing a bunch of typedefs and (for C++) one macro (cauto). It's only purpose is to make C/C++ source code more concise.

For instance the following code segment

#include <const_types.h>

int ld2i( cldouble d )
{ return int(d); }

int main()
{
  cint     a1= -5;
  cuint    b1=  6;
  cldouble c1= 3.14;

  cuint64_t   d1= 345;

  cauto  e1= ld2i( c1 );
  cauto &f1= b1;
}

is equivalent to

#include <cstdint>

int ld2i( const long double d )
{ return int(d); }

int main()
{
  const int          a1= -5;
  const unsigned int b1=  6;
  const long double  c1= 3.14;

  const uint64_t     d1= 345;

  auto const  e1= ld2i( c1 );
  auto const &f1= b1;
}

The following table summarizes all supported types.

typedef	meaning
cbool	const bool
cchar	const char
cshort	const short
cushort	const unsigned short
cint	const int
cuint	const unsigned int
clong	const long
culong	const unsigned long
cllong	const long long
cullong	const unsigned long long
csize_t	const size_t
cfloat	const float
cdouble	const double
cldouble	const long double
cintmax_t	const intmax_t
cuintmax_t	const uintmax_t
cint8_t	const int8_t
cuint8_t	const uint8_t
cint16_t	const int16_t
cuint16_t	const uint16_t
cint32_t	const int32_t
cuint32_t	const uint32_t
cint64_t	const int64_t
cuint64_t	const uint64_t
cint_least8_t	const int_least8_t
cuint_least8_t	const uint_least8_t
cint_least16_t	const int_least16_t
cuint_least16_t	const uint_least16_t
cint_least32_t	const int_least32_t
cuint_least32_t	const uint_least32_t
cint_least64_t	const int_least64_t
cuint_least64_t	const uint_least64_t
cint_fast8_t	const int_fast8_t
cuint_fast8_t	const uint_fast8_t
cint_fast16_t	const int_fast16_t
cuint_fast16_t	const uint_fast16_t
cint_fast32_t	const int_fast32_t
cuint_fast32_t	const uint_fast32_t
cint_fast64_t	const int_fast64_t
cuint_fast64_t	const uint_fast64_t