The prototypes for these intrinsics are in the ia64intrin.h header file.
|__int64 _m_to_int64(__m64 a)||Convert a of type __m64 to type __int64. Translates to nop since both types reside in the same register on Itanium-based systems.|
|__m64 _m_from_int64(__int64 a)||Convert a of type __int64 to type __m64. Translates to nop since both types reside in the same register on Itanium-based systems.|
|__int64 __round_double_to_int64(double d)||Convert its double precision argument to a signed integer.|
|unsigned __int64 __getf_exp(double d)||Map the getf.exp instruction and return the 16-bit exponent and the sign of its operand.|