sorttpl.c File Reference

Detailed Description

template functions for sorting

Author

Michael Winkler

Tobias Achterberg

Gregor Hendel

Definition in file sorttpl.c.

#include "scip/def.h"
#include "scip/dbldblarith.h"

Go to the source code of this file.

Macros
#define	SORTTPL_SHELLSORTMAX   25 /* maximal size for shell sort */
#define	SORTTPL_MINSIZENINTHER   729 /* minimum input size to use ninther (median of nine) for pivot selection */
#define	SORTTPL_HASFIELD1(x)
#define	SORTTPL_HASFIELD1PAR(x)
#define	SORTTPL_HASFIELD2(x)
#define	SORTTPL_HASFIELD2PAR(x)
#define	SORTTPL_HASFIELD3(x)
#define	SORTTPL_HASFIELD3PAR(x)
#define	SORTTPL_HASFIELD4(x)
#define	SORTTPL_HASFIELD4PAR(x)
#define	SORTTPL_HASFIELD5(x)
#define	SORTTPL_HASFIELD5PAR(x)
#define	SORTTPL_HASFIELD6(x)
#define	SORTTPL_HASFIELD6PAR(x)
#define	SORTTPL_HASPTRCOMP(x)
#define	SORTTPL_HASPTRCOMPPAR(x)
#define	SORTTPL_HASINDCOMP(x)
#define	SORTTPL_HASINDCOMPPAR(x)
#define	SORTTPL_EXPANDNAME(method, methodname)   method ## methodname
#define	SORTTPL_NAME(method, methodname)   SORTTPL_EXPANDNAME(method, methodname)
#define	SORTTPL_CMP(x, y)   ((x) - (y))
#define	SORTTPL_ISBETTER(x, y)   (SORTTPL_CMP(x,y) < 0)
#define	SORTTPL_ISWORSE(x, y)   (SORTTPL_CMP(x,y) > 0)
#define	SORTTPL_SWAP(T, x, y)
#define	EXCH(x, y)

Functions
static void	SORTTPL_NAME (sorttpl_shellSort, SORTTPL_NAMEEXT)
static int	SORTTPL_NAME (sorttpl_medianThree, SORTTPL_NAMEEXT)
static int	SORTTPL_NAME (sorttpl_selectPivotIndex, SORTTPL_NAMEEXT)
static void	SORTTPL_NAME (sorttpl_qSort, SORTTPL_NAMEEXT)
static void	SORTTPL_NAME (sorttpl_checkSort, SORTTPL_NAMEEXT)
void	SORTTPL_NAME (SCIPsort, SORTTPL_NAMEEXT)
void	SORTTPL_NAME (SCIPsortedvecInsert, SORTTPL_NAMEEXT)
void	SORTTPL_NAME (SCIPsortedvecDelPos, SORTTPL_NAMEEXT)
SCIP_Bool	SORTTPL_NAME (SCIPsortedvecFind, SORTTPL_NAMEEXT)
static void	SORTTPL_NAME (sorttpl_checkWeightedSelection, SORTTPL_NAMEEXT)
void	SORTTPL_NAME (SCIPselectWeighted, SORTTPL_NAMEEXT)
void	SORTTPL_NAME (SCIPselect, SORTTPL_NAMEEXT)

Macro Definition Documentation

SORTTPL_SHELLSORTMAX

#define SORTTPL_SHELLSORTMAX   25 /* maximal size for shell sort */

Definition at line 50 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_MINSIZENINTHER

#define SORTTPL_MINSIZENINTHER   729 /* minimum input size to use ninther (median of nine) for pivot selection */

Definition at line 51 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_HASFIELD1

#define SORTTPL_HASFIELD1

(

x

)

Definition at line 72 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_HASFIELD1PAR

#define SORTTPL_HASFIELD1PAR

(

x

)

Definition at line 73 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_HASFIELD2

#define SORTTPL_HASFIELD2

(

x

)

Definition at line 79 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_HASFIELD2PAR

#define SORTTPL_HASFIELD2PAR

(

x

)

Definition at line 80 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_HASFIELD3

#define SORTTPL_HASFIELD3

(

x

)

Definition at line 86 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_HASFIELD3PAR

#define SORTTPL_HASFIELD3PAR

(

x

)

Definition at line 87 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_HASFIELD4

#define SORTTPL_HASFIELD4

(

x

)

Definition at line 93 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_HASFIELD4PAR

#define SORTTPL_HASFIELD4PAR

(

x

)

Definition at line 94 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_HASFIELD5

#define SORTTPL_HASFIELD5

(

x

)

Definition at line 100 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_HASFIELD5PAR

#define SORTTPL_HASFIELD5PAR

(

x

)

Definition at line 101 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_HASFIELD6

#define SORTTPL_HASFIELD6

(

x

)

Definition at line 107 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_HASFIELD6PAR

#define SORTTPL_HASFIELD6PAR

(

x

)

Definition at line 108 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_HASPTRCOMP

#define SORTTPL_HASPTRCOMP

(

x

)

Definition at line 114 of file sorttpl.c.

SORTTPL_HASPTRCOMPPAR

#define SORTTPL_HASPTRCOMPPAR

(

x

)

Definition at line 115 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_HASINDCOMP

#define SORTTPL_HASINDCOMP

(

x

)

Definition at line 121 of file sorttpl.c.

SORTTPL_HASINDCOMPPAR

#define SORTTPL_HASINDCOMPPAR

(

x

)

Definition at line 122 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_EXPANDNAME

#define SORTTPL_EXPANDNAME	(		method,
			methodname
	)		method ## methodname

Definition at line 130 of file sorttpl.c.

SORTTPL_NAME

#define SORTTPL_NAME	(		method,
			methodname
	)		SORTTPL_EXPANDNAME(method, methodname)

Definition at line 132 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_CMP

#define SORTTPL_CMP	(		x,
			y
	)		((x) - (y))

Definition at line 153 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_ISBETTER

#define SORTTPL_ISBETTER	(		x,
			y
	)		(SORTTPL_CMP(x,y) < 0)

Definition at line 158 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_ISWORSE

#define SORTTPL_ISWORSE	(		x,
			y
	)		(SORTTPL_CMP(x,y) > 0)

Definition at line 159 of file sorttpl.c.

Referenced by SORTTPL_NAME().

SORTTPL_SWAP

#define SORTTPL_SWAP	(		T,
			x,
			y
	)

Value:

{                \
      T temp = x;   \
      x = y;        \
      y = temp;     \
   }

Definition at line 162 of file sorttpl.c.

Referenced by SORTTPL_NAME().

EXCH

#define EXCH	(		x,
			y
	)

Value:

do                                                                                          \
   {                                                                                           \
      SORTTPL_SWAP(SORTTPL_KEYTYPE, key[x], key[y]);                                           \
                                                                                               \
      if( weights != NULL )                                                                    \
         SORTTPL_SWAP(SCIP_Real, weights[x], weights[y]);                                      \
                                                                                               \
      SORTTPL_HASFIELD1( SORTTPL_SWAP(SORTTPL_FIELD1TYPE, field1[x], field1[y]); )             \
      SORTTPL_HASFIELD2( SORTTPL_SWAP(SORTTPL_FIELD2TYPE, field2[x], field2[y]); )             \
      SORTTPL_HASFIELD3( SORTTPL_SWAP(SORTTPL_FIELD3TYPE, field3[x], field3[y]); )             \
      SORTTPL_HASFIELD4( SORTTPL_SWAP(SORTTPL_FIELD4TYPE, field4[x], field4[y]); )             \
      SORTTPL_HASFIELD5( SORTTPL_SWAP(SORTTPL_FIELD5TYPE, field5[x], field5[y]); )             \
      SORTTPL_HASFIELD6( SORTTPL_SWAP(SORTTPL_FIELD6TYPE, field6[x], field6[y]); )             \
   }                                                                                           \
   while( FALSE )

macro that performs an exchange in the weighted selection algorithm, including weights

Definition at line 788 of file sorttpl.c.

Referenced by SORTTPL_NAME().

Function Documentation

SORTTPL_NAME() [1/12]

static void SORTTPL_NAME ( sorttpl_shellSort  , SORTTPL_NAMEEXT    )

static

shell-sort an array of data elements; use it only for arrays smaller than 25 entries ending index

Definition at line 172 of file sorttpl.c.

References h, NULL, SCIP_Real, SORTTPL_FIELD1TYPE, SORTTPL_FIELD2TYPE, SORTTPL_FIELD3TYPE, SORTTPL_FIELD4TYPE, SORTTPL_FIELD5TYPE, SORTTPL_HASFIELD1, SORTTPL_HASFIELD2, SORTTPL_HASFIELD3, SORTTPL_HASFIELD4, SORTTPL_HASFIELD5, SORTTPL_HASFIELD6, SORTTPL_ISBETTER, and SORTTPL_KEYTYPE.

SORTTPL_NAME() [2/12]

static int SORTTPL_NAME ( sorttpl_medianThree  , SORTTPL_NAMEEXT    )

static

returns the index a, b, or c of the median element among key[a], key[b], and key[c] third index of the array to consider

Definition at line 248 of file sorttpl.c.

References a, b, and SORTTPL_ISBETTER.

SORTTPL_NAME() [3/12]

static int SORTTPL_NAME ( sorttpl_selectPivotIndex  , SORTTPL_NAMEEXT    )

static

guess a median for the key array [start, ..., end] by using the median of the first, last, and middle element last index of the key array to consider

Definition at line 301 of file sorttpl.c.

References SORTTPL_HASINDCOMPPAR, SORTTPL_HASPTRCOMPPAR, SORTTPL_MINSIZENINTHER, SORTTPL_NAME, SORTTPL_NAMEEXT, and SORTTPL_SHELLSORTMAX.

SORTTPL_NAME() [4/12]

static void SORTTPL_NAME ( sorttpl_qSort  , SORTTPL_NAMEEXT    )

static

quick-sort an array of pointers; pivot is the medial element TRUE, if quick-sort should start with with key[lo] < pivot <= key[hi], key[lo] <= pivot < key[hi] otherwise

Definition at line 374 of file sorttpl.c.

References NULL, SORTTPL_FIELD1TYPE, SORTTPL_FIELD2TYPE, SORTTPL_FIELD3TYPE, SORTTPL_FIELD4TYPE, SORTTPL_FIELD5TYPE, SORTTPL_HASFIELD1, SORTTPL_HASFIELD1PAR, SORTTPL_HASFIELD2, SORTTPL_HASFIELD2PAR, SORTTPL_HASFIELD3, SORTTPL_HASFIELD3PAR, SORTTPL_HASFIELD4, SORTTPL_HASFIELD4PAR, SORTTPL_HASFIELD5, SORTTPL_HASFIELD5PAR, SORTTPL_HASFIELD6, SORTTPL_HASFIELD6PAR, SORTTPL_HASINDCOMPPAR, SORTTPL_HASPTRCOMPPAR, SORTTPL_ISBETTER, SORTTPL_ISWORSE, SORTTPL_KEYTYPE, SORTTPL_NAME, SORTTPL_NAMEEXT, SORTTPL_SHELLSORTMAX, and SORTTPL_SWAP.

SORTTPL_NAME() [5/12]

static void SORTTPL_NAME ( sorttpl_checkSort  , SORTTPL_NAMEEXT    )

static

verifies that an array is indeed sorted data element comparator data element comparator pointer to data field that is given to the external compare method length of the array

Definition at line 559 of file sorttpl.c.

References SORTTPL_ISBETTER.

SORTTPL_NAME() [6/12]

void SORTTPL_NAME	(	SCIPsort	,
		SORTTPL_NAMEEXT
	)

SCIPsort...(): sorts array 'key' and performs the same permutations on the additional 'field' arrays additional field that should be sorted in the same way additional field that should be sorted in the same way additional field that should be sorted in the same way additional field that should be sorted in the same way additional field that should be sorted in the same way additional field that should be sorted in the same way data element comparator data element comparator pointer to data field that is given to the external compare method length of arrays

Definition at line 578 of file sorttpl.c.

References NULL, SORTTPL_HASFIELD1PAR, SORTTPL_HASFIELD2PAR, SORTTPL_HASFIELD3PAR, SORTTPL_HASFIELD4PAR, SORTTPL_HASFIELD5PAR, SORTTPL_HASFIELD6PAR, SORTTPL_HASINDCOMPPAR, SORTTPL_HASPTRCOMPPAR, SORTTPL_NAME, SORTTPL_NAMEEXT, SORTTPL_SHELLSORTMAX, and TRUE.

SORTTPL_NAME() [7/12]

void SORTTPL_NAME	(	SCIPsortedvecInsert	,
		SORTTPL_NAMEEXT
	)

SCIPsortedvecInsert...(): adds an element to a sorted multi-vector

This method does not do any memory allocation! It assumes that the arrays are large enough to store the additional values.pointer to store the insert position, or NULL

Definition at line 644 of file sorttpl.c.

References NULL, SORTTPL_HASFIELD1, SORTTPL_HASFIELD2, SORTTPL_HASFIELD3, SORTTPL_HASFIELD4, SORTTPL_HASFIELD5, SORTTPL_HASFIELD6, and SORTTPL_ISBETTER.

SORTTPL_NAME() [8/12]

void SORTTPL_NAME	(	SCIPsortedvecDelPos	,
		SORTTPL_NAMEEXT
	)

SCIPsortedvecDelPos...(): deletes an element at a given position from a sorted multi-vector pointer to length of arrays (will be decreased by 1)

Definition at line 695 of file sorttpl.c.

References SORTTPL_FIELD1TYPE, SORTTPL_HASFIELD1, SORTTPL_HASFIELD2, SORTTPL_HASFIELD3, SORTTPL_HASFIELD4, SORTTPL_HASFIELD5, and SORTTPL_HASFIELD6.

SORTTPL_NAME() [9/12]

SCIP_Bool SORTTPL_NAME	(	SCIPsortedvecFind	,
		SORTTPL_NAMEEXT
	)

SCIPsortedvecFind...(): Finds the position at which 'val' is located in the sorted vector by binary search. If the element exists, the method returns TRUE and stores the position of the element in '*pos'. If the element does not exist, the method returns FALSE and stores the position of the element that follows 'val' in the ordering in '*pos', i.e., '*pos' is the position at which 'val' would be inserted. Note that if the element is not found, '*pos' may be equal to len if all existing elements are smaller than 'val'.pointer to store the insert position

Definition at line 741 of file sorttpl.c.

References FALSE, NULL, SORTTPL_ISBETTER, and TRUE.

SORTTPL_NAME() [10/12]

static void SORTTPL_NAME ( sorttpl_checkWeightedSelection  , SORTTPL_NAMEEXT    )

static

verifies that the partial sorting and especially the median element satisfy all properties the position of the weighted median

Definition at line 808 of file sorttpl.c.

References NULL, QUAD, QUAD_ASSIGN, QUAD_TO_DBL, SCIP_DEFAULT_EPSILON, SCIP_Real, SCIPquadprecSumQD, and SORTTPL_ISBETTER.

SORTTPL_NAME() [11/12]

void SORTTPL_NAME	(	SCIPselectWeighted	,
		SORTTPL_NAMEEXT
	)

partially sorts a given keys array around the weighted median w.r.t. the capacity and permutes the additional 'field' arrays in the same way

If no weights-array is passed, the algorithm assumes weights equal to 1.pointer to store the index of the weighted median, or NULL, if not needed

Definition at line 860 of file sorttpl.c.

References EXCH, MAX, NULL, SCIP_Real, SORTTPL_CMP, SORTTPL_HASFIELD1PAR, SORTTPL_HASFIELD2PAR, SORTTPL_HASFIELD3PAR, SORTTPL_HASFIELD4PAR, SORTTPL_HASFIELD5PAR, SORTTPL_HASFIELD6PAR, SORTTPL_HASINDCOMPPAR, SORTTPL_HASPTRCOMPPAR, SORTTPL_ISBETTER, SORTTPL_ISWORSE, SORTTPL_KEYTYPE, SORTTPL_NAME, SORTTPL_NAMEEXT, and SORTTPL_SHELLSORTMAX.

SORTTPL_NAME() [12/12]

void SORTTPL_NAME	(	SCIPselect	,
		SORTTPL_NAMEEXT
	)

partially sorts a given keys array around the given index k and permutes the additional 'field' arrays are in the same way length of arrays

Definition at line 1078 of file sorttpl.c.

References NULL, SCIP_Real, SORTTPL_HASFIELD1PAR, SORTTPL_HASFIELD2PAR, SORTTPL_HASFIELD3PAR, SORTTPL_HASFIELD4PAR, SORTTPL_HASFIELD5PAR, SORTTPL_HASFIELD6PAR, SORTTPL_HASINDCOMPPAR, SORTTPL_HASPTRCOMPPAR, SORTTPL_NAME, and SORTTPL_NAMEEXT.