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#ifndef __PRC_DOUBLE_H
#define __PRC_DOUBLE_H
#include <cstdlib>
#include <cmath>
#include <cstring>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef BYTE_ORDER
# undef WORDS_BIG_ENDIAN
# undef WORDS_LITTLE_ENDIAN
# if BYTE_ORDER == BIG_ENDIAN
# define WORDS_BIG_ENDIAN 1
# endif
# if BYTE_ORDER == LITTLE_ENDIAN
# define WORDS_LITTLE_ENDIAN 1
# endif
#endif
// from Adobe's documentation
union ieee754_double
{
double d;
/* This is the IEEE 754 double-precision format. */
struct
{
#ifdef WORDS_BIGENDIAN
unsigned int negative:1;
unsigned int exponent:11;
/* Together these comprise the mantissa. */
unsigned int mantissa0:20;
unsigned int mantissa1:32;
#else
/* Together these comprise the mantissa. */
unsigned int mantissa1:32;
unsigned int mantissa0:20;
unsigned int exponent:11;
unsigned int negative:1;
#endif
} ieee;
};
union ieee754_float
{
float f;
/* This is the IEEE 754 float-precision format. */
struct {
#ifdef WORDS_BIGENDIAN
unsigned int negative:1;
unsigned int exponent:8;
unsigned int mantissa:23;
#else
unsigned int mantissa:23;
unsigned int exponent:8;
unsigned int negative:1;
#endif
} ieee;
};
enum ValueType {VT_double,VT_exponent};
struct sCodageOfFrequentDoubleOrExponent
{
short Type;
short NumberOfBits;
unsigned Bits;
union {
unsigned ul[2];
double Value;
} u2uod;
};
#ifdef WORDS_BIGENDIAN
# define DOUBLEWITHTWODWORD(upper,lower) upper,lower
# define UPPERPOWER (0)
# define LOWERPOWER (!UPPERPOWER)
# define NEXTBYTE(pbd) ((pbd)++)
# define PREVIOUSBYTE(pbd) ((pbd)--)
# define MOREBYTE(pbd,pbend) ((pbd)<=(pbend))
# define OFFSETBYTE(pbd,offset) ((pbd)+=offset)
# define BEFOREBYTE(pbd) ((pbd)-1)
# define DIFFPOINTERS(p1,p2) ((p1)-(p2))
# define SEARCHBYTE(pbstart,b,nb) (unsigned char *)memrchr((pbstart),(b),(nb))
# define BYTEAT(pb,i) *((pb)-(i))
#else
# define DOUBLEWITHTWODWORD(upper,lower) lower,upper
# define UPPERPOWER (1)
# define LOWERPOWER (!UPPERPOWER)
# define NEXTBYTE(pbd) ((pbd)--)
# define PREVIOUSBYTE(pbd) ((pbd)++)
# define MOREBYTE(pbd,pbend) ((pbd)>=(pbend))
# define OFFSETBYTE(pbd,offset) ((pbd)-=offset)
# define BEFOREBYTE(pbd) ((pbd)+1)
# define DIFFPOINTERS(p1,p2) ((unsigned)((p2)-(p1)))
# define SEARCHBYTE(pbstart,b,nb) (unsigned char *)memchr((pbstart),(b),(nb))
# define BYTEAT(pb,i) *((pb)+(i))
#endif
#define MAXLENGTHFORCOMPRESSEDTYPE ((22+1+1+4+6*(1+8))+7)/8
#define NEGATIVE(d) (((union ieee754_double *)&(d))->ieee.negative)
#define EXPONENT(d) (((union ieee754_double *)&(d))->ieee.exponent)
#define MANTISSA0(d) (((union ieee754_double *)&(d))->ieee.mantissa0)
#define MANTISSA1(d) (((union ieee754_double *)&(d))->ieee.mantissa1)
typedef unsigned char PRCbyte;
typedef unsigned short PRCword;
typedef unsigned PRCdword;
extern PRCdword stadwZero[2],stadwNegativeZero[2];
#define NUMBEROFELEMENTINACOFDOE (2077)
#ifdef WORDS_BIGENDIAN
# define DOUBLEWITHTWODWORDINTREE(upper,lower) {upper,lower}
#else
# define DOUBLEWITHTWODWORDINTREE(upper,lower) {lower,upper}
#endif
extern sCodageOfFrequentDoubleOrExponent acofdoe[NUMBEROFELEMENTINACOFDOE];
struct sCodageOfFrequentDoubleOrExponent* getcofdoe(unsigned,short);
#define STAT_V
#define STAT_DOUBLE
int stCOFDOECompare(const void*,const void*);
#ifdef WORDS_BIGENDIAN
#ifndef HAVE_MEMRCHR
void *memrchr(const void *,int,size_t);
#endif
#endif
#endif // __PRC_DOUBLE_H
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