inline.h

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#ifndef GUM_INLINE_H
#define GUM_INLINE_H

#ifndef DOXYGEN_SHOULD_SKIP_THIS

#  ifndef GUM_NO_INLINE

#    define INLINE inline

// ENFORCED_INLINE is a stronger version of the inline, using __forceinline on
// MSVC, but it still doesn't use GCC's always_inline. This is useful in
// (common) situations where MSVC needs forceinline but GCC is still doing fine
// with just inline.  (from eigen library)
#    if (defined _MSC_VER) || (defined __INTEL_COMPILER)
#      define ENFORCED_INLINE __forceinline
#    else
#      define ENFORCED_INLINE inline
#    endif

// ALWAYS_INLINE is the strongest, it has the effect of making the function
// inline and adding every possible attribute to maximize inlining. This should
// only be used when really necessary: in particular, it uses
// __attribute__((always_inline)) on GCC, which most of the time is useless and
// can severely harm compile times.
// FIXME with the always_inline attribute, gcc 3.4.x reports the following
// compilation error:
//   Eval.h:91: sorry, unimplemented: inlining failed in call to '...' :
//   function body not available (from eigen library)
#    if GNUC_AT_LEAST(4, 0)
#      define ALWAYS_INLINE __attribute__((always_inline)) inline
#    else
#      define ALWAYS_INLINE ENFORCED_INLINE
#    endif

#    if (defined __GNUC__)
#      define NO_INLINE __attribute__((noinline))
#    elif (defined _MSC_VER)
#      define NEVER_INLINE __declspec(noinline)
#    else
#      define NEVER_INLINE
#    endif
#  else   // GUM_NO_INLINE
#    define INLINE
#    define STRONG_INLINE
#    define ALWAYS_INLINE
#    define NEVER_INLINE
#  endif /* GUM_NO_INLINE */

#endif /* DOXYGEN_SHOULD_SKIP_THIS */

#endif /* GUM_INLINE_H */