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  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice, 
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      may be used to endorse or promote products derived from this software 
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// 100:
// 1 arguments passed by reference
// 0 rounding mode passed as argument
// 0 pointer to status flags passed as argument 

#ifdef WINDOWS
  #define LX "%I64x"
#else
  #ifdef HPUX_OS
    #define LX "%llx"
  #else
    #define LX "%Lx"
  #endif
#endif

/* basic decimal floating-point types */

#if defined _MSC_VER
#if defined _M_IX86 && !defined __INTEL_COMPILER // Win IA-32, MS compiler
#define ALIGN(n)
#else
#define ALIGN(n) __declspec(align(n))
#endif
#else
#define ALIGN(n) __attribute__ ((aligned(n)))
#endif

typedef unsigned int Decimal32;
typedef unsigned long long Decimal64;
typedef struct ALIGN(16) { unsigned long long w[2]; } Decimal128;

/* rounding modes */

typedef enum _IDEC_roundingmode {
    _IDEC_nearesteven = 0,
    _IDEC_downward    = 1,
    _IDEC_upward      = 2,
    _IDEC_towardzero  = 3,
    _IDEC_nearestaway = 4,
    _IDEC_dflround    = _IDEC_nearesteven
} _IDEC_roundingmode;
typedef unsigned int _IDEC_round;


/* exception flags */

typedef enum _IDEC_flagbits {
    _IDEC_invalid       = 0x01,
    _IDEC_zerodivide    = 0x04,
    _IDEC_overflow      = 0x08,
    _IDEC_underflow     = 0x10,
    _IDEC_inexact       = 0x20,
    _IDEC_allflagsclear = 0x00
} _IDEC_flagbits;
typedef unsigned int _IDEC_flags;  // could be a struct with diagnostic info

extern
void __bid128_mul (
    Decimal128 *,
    Decimal128 *,
    Decimal128 *,
    _IDEC_round *,
    _IDEC_flags *
);

#if BID_BIG_ENDIAN
#define HIGH_128W 0
#define LOW_128W  1
#else
#define HIGH_128W 1
#define LOW_128W  0
#endif