mathtools.h

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#define _double2fixmagic (68719476736.0*1.5)
//2^36 * 1.5,  (52-_shiftamt=36) uses limited precisicion to floor
#define _shiftamt 16
//16.16 fixed point representation,

#ifdef BigEndian_
#define iexp_                           0
#define iman_                           1
#else
#define iexp_                           1
#define iman_                           0
#endif //BigEndian_

//#ifdef HAVE_MMX
//#define F2I(dbl,i) 
//{double d = dbl + _double2fixmagic; i = ((int*)&d)[iman_] >> _shiftamt; }
//#else
#define F2I(dbl,i) i=(int)dbl;
//#endif

#if 0
#define SINCOS(f,s,c) \
  __asm__ __volatile__ ("fsincos" : "=t" (c), "=u" (s) : "0" (f))
#else
#define SINCOS(f,s,c) {s=sin(f);c=cos(f);}
#endif

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