ieee754.h

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#ifndef _IEEE754_H_
#define _IEEE754_H_

#ifdef __cplusplus
extern "C" {
#endif

struct cfloat;

void IEEEInit                   // INITIALIZE ROUTINE
    ( void )
;
void IEEEFini                   // FINALIZE ROUTINE
    ( void )
;

//---------------------- mathematical functions ---------------------

typedef enum {
    CF_32
  , CF_64
} CF_PRECISION;


cfloat * IEEECFDiv              // IEEE DIVIDE
    ( cfloat *left
    , cfloat *right
    , CF_PRECISION prec )       // - precision of operation
;
cfloat * IEEECFMul              // IEEE MULTIPLY
    ( cfloat *left
    , cfloat *right
    , CF_PRECISION prec )       // - precision of operation
;
cfloat * IEEECFMod              // IEEE MODULUS
    ( cfloat *left
    , cfloat *right
    , CF_PRECISION prec )       // - precision of operation
;
cfloat * IEEECFNegate           // IEEE NEGATE
    ( cfloat *f
    , CF_PRECISION prec )       // - precision of operation
;
cfloat * IEEECFAdd              // IEEE ADDITION
    ( cfloat *left
    , cfloat *right
    , CF_PRECISION prec )       // - precision of operation
;
cfloat * IEEECFToCF             // IEEE inf->finite->inf precision
    ( cfloat *f                 // - cfloat to stuff into 32 or 64 bits
    , CF_PRECISION prec )       // - precision of operation
;
cfloat * IEEECFToCFNotSpecial   // IEEE inf->finite->inf precision
    ( cfloat *f                 // - cfloat to stuff into 32 or 64 bits
                                //   must already be tested as not being
                                //   PosInf, NegInf or NaN
    , CF_PRECISION prec )       // - precision of operation
;
//---------------------- comparison functions ---------------------

typedef enum {
    CF_CMP_NONE
  , CF_CMP_LT
  , CF_CMP_LE
  , CF_CMP_GT
  , CF_CMP_GE
  , CF_CMP_EQ
  , CF_CMP_NE
} CF_COMPARE;

cf_bool IEEECFCmp
    ( cfloat *left
    , cfloat *right
    , CF_COMPARE cmp )
;
void IEEECFFree                 // FREE CFLOAT (UNLESS SPECIAL VALUE)
    ( cfloat * cf )
;

cfloat *IEEECheckRange          // CHECK RANGE OF CFLOAT
    ( cfloat *cf                // - cfloat to check
    , CF_PRECISION prec )       // - precision
;
//---------------------- special values ---------------------

cfloat *IEEEGetPosInf           // GET POSITIVE INFINITY
    (void)
;
cfloat *IEEEGetNegInf           // GET NEGATIVE INFINITY
    (void)
;
cfloat *IEEEGetNaN              // GET NAN
    (void)
;
cf_bool IEEEIsSpecialValue      // CF_TRUE IF F IS POSINF, NEGINF OR NAN
    (cfloat *f)
;

#ifdef __cplusplus
};
#endif

#endif // _IEEE754_H_