> Ok, but most GNU compilers has a __restrict__ extension for C89 and C++
> that we could use. And MSVC has a compiler pragma in VS2003 and a
> __restrict extension in VS2005 later versions. So we could define a mscro
> RESTRICT to be restrict in ISO C99, __restrict__ in GCC 3 and 4,
> __restrict in recent versions of MSVC, and nothing elsewhere.
I know it's ugly, but something like this:
#define RESTRICT
#define INLINE
/*use GNU extension if possible*/
#ifdef __GNUC__
#if (__GNUC__ >= 3)
#undef RESTRICT
#undef INLINE
#define RESTRICT __restrict__
#define INLINE __inline__
#endif
#endif
/* use MSVC extensions if possible */
#ifdef MSVC
#if (MSVC_VER >= 1400)
#define RESTRICT __restrict
#define INLINE inline
#endif
#endif
#ifdef __cplusplus
extern "C" {
#undef INLINE
#define INLINE inline
#else
/* use C99 if possible */
#if (__STDC_VERSION__ >= 199901L)
#undef RESTRICT
#undef INLINE
#define RESTRICT restrict
#define INLINE inline
#endif
#endif
#ifdef DOUBLE
typedef double Treal
#else
typedef float Treal
#endif
typedef Treal *RESTRICT Vreal /* V as in "vector" */
S.M.
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