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GetPDBByN.c
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1 /************************************************************************/
2 /**
3 
4  \file GetPDBByN.c
5 
6  \version V1.11
7  \date 07.07.14
8  \brief
9 
10  \copyright (c) UCL / Dr. Andrew C. R. Martin 1992-2014
11  \author Dr. Andrew C. R. Martin
12  \par
13  Institute of Structural & Molecular Biology,
14  University College London,
15  Gower Street,
16  London.
17  WC1E 6BT.
18  \par
19  andrew@bioinf.org.uk
20  andrew.martin@ucl.ac.uk
21 
22 **************************************************************************
23 
24  This code is NOT IN THE PUBLIC DOMAIN, but it may be copied
25  according to the conditions laid out in the accompanying file
26  COPYING.DOC.
27 
28  The code may be modified as required, but any modifications must be
29  documented so that the person responsible can be identified.
30 
31  The code may not be sold commercially or included as part of a
32  commercial product except as described in the file COPYING.DOC.
33 
34 **************************************************************************
35 
36  Description:
37  ============
38 
39 
40 **************************************************************************
41 
42  Usage:
43  ======
44 
45 **************************************************************************
46 
47  Revision History:
48  =================
49 - V1.0 22.02.94 Original release
50 - V1.1 23.05.94 Added FindNextChainPDB()
51 - V1.2 05.10.94 KillSidechain() uses BOOL rather than int
52 - V1.3 24.07.95 Added TermPDB()
53 - V1.4 25.07.95 Added GetPDBChainLabels()
54 - V1.5 26.09.95 Fixed bug in TermPDB()
55 - V1.6 12.10.95 Added DupePDB(), CopyPDBCoords()
56 - V1.7 23.10.95 Moved FindResidueSpec() to ParseRes.c
57 - V1.8 10.01.96 Added ExtractZonePDB()
58 - V1.9 14.03.96 Added FindAtomInRes()
59 - V1.10 08.10.99 Initialised some variables
60 - V1.11 07.07.14 Use bl prefix for functions By: CTP
61 
62 *************************************************************************/
63 /* Doxygen
64  -------
65  #GROUP Handling PDB Data
66  #SUBGROUP Manipulating the PDB linked list
67  #FUNCTION blGetPDBByN()
68  Gets a pointer to Nth item in a PDB linked list
69 */
70 /************************************************************************/
71 /* Includes
72 */
73 #include "pdb.h"
74 #include "macros.h"
75 
76 /************************************************************************/
77 /* Defines and macros
78 */
79 
80 /************************************************************************/
81 /* Globals
82 */
83 
84 /************************************************************************/
85 /* Prototypes
86 */
87 
88 
89 /************************************************************************/
90 /*>PDB *blGetPDBByN(PDB *pdb, int n)
91  ---------------------------------
92 *//**
93 
94  \param[in] *pdb PDB linked list
95  \param[in] n Offset into linked list
96  \return Pointer to n'th item in linked list
97 
98  Gets a pointer to a pdb item by taking a PDB linked list and an
99  integer.
100  The pointer returned is the n'th item in the list
101 
102 - 13.05.92 Original
103 - 07.07.14 Use bl prefix for functions By: CTP
104 
105 */
106 PDB *blGetPDBByN(PDB *pdb,
107  int n)
108 {
109  PDB *p;
110  int i;
111 
112  for(i=0, p=pdb; p && i<n ; NEXT(p), i++) ;
113 
114  return(p);
115 }
116 
pdb.h
Include file for PDB routines.
pdb_entry
Definition: pdb.h:298
NEXT
#define NEXT(x)
Definition: macros.h:249
macros.h
Useful macros.
blGetPDBByN
PDB * blGetPDBByN(PDB *pdb, int n)
Definition: GetPDBByN.c:106
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