[no bug]clearFPU exception

[REDDemon]

Maybe i'm lacking some knowledge about "_asm_" but in the irrMath.h header (line 391):

Code: Select all

REALINLINE void clearFPUException ()
	{
#ifdef IRRLICHT_FAST_MATH
		return;
#ifdef feclearexcept
		feclearexcept(FE_ALL_EXCEPT);
#elif defined(_MSC_VER)
		__asm fnclex;
#elif defined(__GNUC__) && defined(__x86__)
		__asm__ __volatile__ ("fclex \n\t");
#else
#  warn clearFPUException not supported.
#endif
#endif
	}

aren't those pieces of code:

Code: Select all

#ifdef feclearexcept
		feclearexcept(FE_ALL_EXCEPT);
#elif defined(_MSC_VER)
		__asm fnclex;
#elif defined(__GNUC__) && defined(__x86__)
		__asm__ __volatile__ ("fclex \n\t");
#else
#  warn clearFPUException not supported.
#endif

never executed? they always appens after the "return;"

[pippy3]

asm is a keyword for assembly language. The __volatile__ macro is defined here: http://www.ibiblio.org/gferg/ldp/GCC-In ... HOWTO.html

[hybrid]

FAST_MATH is not officially supported by the core engine. It merely gives some hints and "sometimes working" pieces of code for further optimization. This part seems to be completely disabled due to problems or some other reason.