myisampack.h File Reference

Storing of values in high byte first order. More...

#include "my_config.h"
#include <sys/types.h>
#include "my_inttypes.h"

Go to the source code of this file.

Macros
#define	mi_int1store(T, A)   *((uchar *)(T)) = (uchar)(A)
#define	mi_int2store(T, A)
#define	mi_int3store(T, A)
#define	mi_int4store(T, A)
#define	mi_int5store(T, A)
#define	mi_int6store(T, A)
#define	mi_int7store(T, A)
#define	mi_int8store(T, A)
#define	mi_float4store(T, A)
#define	mi_float8store(T, V)
#define	mi_rowstore(T, A)   mi_int8store(T, A)
#define	mi_rowkorr(T)   mi_uint8korr(T)
#define	mi_sizestore(T, A)   mi_int8store(T, A)
#define	mi_sizekorr(T)   mi_uint8korr(T)

Functions
static int8	mi_sint1korr (const uchar *A)
static uint8	mi_uint1korr (const uchar *A)
static int16	mi_sint2korr (const uchar *A)
static int32	mi_sint3korr (const uchar *A)
static int32	mi_sint4korr (const uchar *A)
static uint16	mi_uint2korr (const uchar *A)
static uint32	mi_uint3korr (const uchar *A)
static uint32	mi_uint4korr (const uchar *A)
static ulonglong	mi_uint5korr (const uchar *A)
static ulonglong	mi_uint6korr (const uchar *A)
static ulonglong	mi_uint7korr (const uchar *A)
static ulonglong	mi_uint8korr (const uchar *A)
static longlong	mi_sint8korr (const uchar *A)
static float	mi_float4get (const uchar *M)
static double	mi_float8get (const uchar *M)

Detailed Description

Storing of values in high byte first order.

Integer keys and file pointers are stored with high byte first to get better compression.

Macro Definition Documentation

mi_float4store

#define mi_float4store	(		T,
			A
	)

Value:

  {                                       \
    ((uchar *)(T))[0] = ((uchar *)&A)[3]; \
    ((uchar *)(T))[1] = ((uchar *)&A)[2]; \
    ((uchar *)(T))[2] = ((uchar *)&A)[1]; \
    ((uchar *)(T))[3] = ((uchar *)&A)[0]; \
  }

mi_float8store

#define mi_float8store	(		T,
			V
	)

Value:

  {                                       \
    ((uchar *)(T))[0] = ((uchar *)&V)[7]; \
    ((uchar *)(T))[1] = ((uchar *)&V)[6]; \
    ((uchar *)(T))[2] = ((uchar *)&V)[5]; \
    ((uchar *)(T))[3] = ((uchar *)&V)[4]; \
    ((uchar *)(T))[4] = ((uchar *)&V)[3]; \
    ((uchar *)(T))[5] = ((uchar *)&V)[2]; \
    ((uchar *)(T))[6] = ((uchar *)&V)[1]; \
    ((uchar *)(T))[7] = ((uchar *)&V)[0]; \
  }

mi_int1store

#define mi_int1store	(		T,
			A
	)		*((uchar *)(T)) = (uchar)(A)

mi_int2store

#define mi_int2store	(		T,
			A
	)

Value:

  {                                             \
    const uint def_temp = (uint)(A);            \
    ((uchar *)(T))[1] = (uchar)(def_temp);      \
    ((uchar *)(T))[0] = (uchar)(def_temp >> 8); \
  }

mi_int3store

#define mi_int3store	(		T,
			A
	)

Value:

  { /*lint -save -e734 */                        \
    const ulong def_temp = (ulong)(A);           \
    ((uchar *)(T))[2] = (uchar)(def_temp);       \
    ((uchar *)(T))[1] = (uchar)(def_temp >> 8);  \
    ((uchar *)(T))[0] = (uchar)(def_temp >> 16); \
                              /*lint -restore */}

mi_int4store

#define mi_int4store	(		T,
			A
	)

Value:

  {                                              \
    const ulong def_temp = (ulong)(A);           \
    ((uchar *)(T))[3] = (uchar)(def_temp);       \
    ((uchar *)(T))[2] = (uchar)(def_temp >> 8);  \
    ((uchar *)(T))[1] = (uchar)(def_temp >> 16); \
    ((uchar *)(T))[0] = (uchar)(def_temp >> 24); \
  }

mi_int5store

#define mi_int5store	(		T,
			A
	)

Value:

  {                                                                    \
    const ulong def_temp = (ulong)(A), def_temp2 = (ulong)((A) >> 32); \
    ((uchar *)(T))[4] = (uchar)(def_temp);                             \
    ((uchar *)(T))[3] = (uchar)(def_temp >> 8);                        \
    ((uchar *)(T))[2] = (uchar)(def_temp >> 16);                       \
    ((uchar *)(T))[1] = (uchar)(def_temp >> 24);                       \
    ((uchar *)(T))[0] = (uchar)(def_temp2);                            \
  }

mi_int6store

#define mi_int6store	(		T,
			A
	)

Value:

  {                                                                    \
    const ulong def_temp = (ulong)(A), def_temp2 = (ulong)((A) >> 32); \
    ((uchar *)(T))[5] = (uchar)(def_temp);                             \
    ((uchar *)(T))[4] = (uchar)(def_temp >> 8);                        \
    ((uchar *)(T))[3] = (uchar)(def_temp >> 16);                       \
    ((uchar *)(T))[2] = (uchar)(def_temp >> 24);                       \
    ((uchar *)(T))[1] = (uchar)(def_temp2);                            \
    ((uchar *)(T))[0] = (uchar)(def_temp2 >> 8);                       \
  }

mi_int7store

#define mi_int7store	(		T,
			A
	)

Value:

  {                                                                    \
    const ulong def_temp = (ulong)(A), def_temp2 = (ulong)((A) >> 32); \
    ((uchar *)(T))[6] = (uchar)(def_temp);                             \
    ((uchar *)(T))[5] = (uchar)(def_temp >> 8);                        \
    ((uchar *)(T))[4] = (uchar)(def_temp >> 16);                       \
    ((uchar *)(T))[3] = (uchar)(def_temp >> 24);                       \
    ((uchar *)(T))[2] = (uchar)(def_temp2);                            \
    ((uchar *)(T))[1] = (uchar)(def_temp2 >> 8);                       \
    ((uchar *)(T))[0] = (uchar)(def_temp2 >> 16);                      \
  }

mi_int8store

#define mi_int8store	(		T,
			A
	)

Value:

  {                                                                     \
    const ulong def_temp3 = (ulong)(A), def_temp4 = (ulong)((A) >> 32); \
    mi_int4store((uchar *)(T) + 0, def_temp4);                          \
    mi_int4store((uchar *)(T) + 4, def_temp3);                          \
  }

mi_rowkorr

#define mi_rowkorr

(

T

)

mi_uint8korr(T)

mi_rowstore

#define mi_rowstore	(		T,
			A
	)		mi_int8store(T, A)

mi_sizekorr

#define mi_sizekorr

(

T

)

mi_uint8korr(T)

mi_sizestore

#define mi_sizestore	(		T,
			A
	)		mi_int8store(T, A)

Function Documentation

mi_float4get()

static float mi_float4get ( const uchar *  M )

inlinestatic

mi_float8get()

static double mi_float8get ( const uchar *  M )

inlinestatic

mi_sint1korr()

static int8 mi_sint1korr ( const uchar *  A )

inlinestatic

mi_sint2korr()

static int16 mi_sint2korr ( const uchar *  A )

inlinestatic

mi_sint3korr()

static int32 mi_sint3korr ( const uchar *  A )

inlinestatic

mi_sint4korr()

static int32 mi_sint4korr ( const uchar *  A )

inlinestatic

mi_sint8korr()

static longlong mi_sint8korr ( const uchar *  A )

inlinestatic

mi_uint1korr()

static uint8 mi_uint1korr ( const uchar *  A )

inlinestatic

mi_uint2korr()

static uint16 mi_uint2korr ( const uchar *  A )

inlinestatic

mi_uint3korr()

static uint32 mi_uint3korr ( const uchar *  A )

inlinestatic

mi_uint4korr()

static uint32 mi_uint4korr ( const uchar *  A )

inlinestatic

mi_uint5korr()

static ulonglong mi_uint5korr ( const uchar *  A )

inlinestatic

mi_uint6korr()

static ulonglong mi_uint6korr ( const uchar *  A )

inlinestatic

mi_uint7korr()

static ulonglong mi_uint7korr ( const uchar *  A )

inlinestatic

mi_uint8korr()

static ulonglong mi_uint8korr ( const uchar *  A )

inlinestatic