1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
/* histogram/ntuple.c
*
* Copyright (C) 2000 Simone Piccardi
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/* Jan/2001 Modified by Brian Gough. Minor changes for GSL */
#include <config.h>
#include <errno.h>
#include <gsl/gsl_errno.h>
#include <gsl/gsl_ntuple.h>
/*
* gsl_ntuple_open:
* Initialize an ntuple structure and create the related file
*/
gsl_ntuple *
gsl_ntuple_create (char *filename, void *ntuple_data, size_t size)
{
gsl_ntuple *ntuple = (gsl_ntuple *)malloc (sizeof (gsl_ntuple));
if (ntuple == 0)
{
GSL_ERROR_VAL ("failed to allocate space for ntuple struct",
GSL_ENOMEM, 0);
}
ntuple->ntuple_data = ntuple_data;
ntuple->size = size;
ntuple->file = fopen (filename, "wb");
if (ntuple->file == 0)
{
free (ntuple);
GSL_ERROR_VAL ("unable to create ntuple file", GSL_EFAILED, 0);
}
return ntuple;
}
/*
* gsl_ntuple_open:
* Initialize an ntuple structure and open the related file
*/
gsl_ntuple *
gsl_ntuple_open (char *filename, void *ntuple_data, size_t size)
{
gsl_ntuple *ntuple = (gsl_ntuple *)malloc (sizeof (gsl_ntuple));
if (ntuple == 0)
{
GSL_ERROR_VAL ("failed to allocate space for ntuple struct",
GSL_ENOMEM, 0);
}
ntuple->ntuple_data = ntuple_data;
ntuple->size = size;
ntuple->file = fopen (filename, "rb");
if (ntuple->file == 0)
{
free (ntuple);
GSL_ERROR_VAL ("unable to open ntuple file for reading",
GSL_EFAILED, 0);
}
return ntuple;
}
/*
* gsl_ntuple_write:
* write to file a data row, must be used in a loop!
*/
int
gsl_ntuple_write (gsl_ntuple * ntuple)
{
size_t nwrite;
nwrite = fwrite (ntuple->ntuple_data, ntuple->size,
1, ntuple->file);
if (nwrite != 1)
{
GSL_ERROR ("failed to write ntuple entry to file", GSL_EFAILED);
}
return GSL_SUCCESS;
}
/* the following function is a synonym for gsl_ntuple_write */
int
gsl_ntuple_bookdata (gsl_ntuple * ntuple)
{
return gsl_ntuple_write (ntuple);
}
/*
* gsl_ntuple_read:
* read form file a data row, must be used in a loop!
*/
int
gsl_ntuple_read (gsl_ntuple * ntuple)
{
size_t nread;
nread = fread (ntuple->ntuple_data, ntuple->size, 1, ntuple->file);
if (nread == 0 && feof(ntuple->file))
{
return GSL_EOF;
}
if (nread != 1)
{
GSL_ERROR ("failed to read ntuple entry from file", GSL_EFAILED);
}
return GSL_SUCCESS;
}
/*
* gsl_ntuple_project:
* fill an histogram with an ntuple file contents, use
* SelVal and SelFunc user defined functions to get
* the value to book and the selection funtion
*/
#define EVAL(f,x) ((*((f)->function))(x,(f)->params))
int
gsl_ntuple_project (gsl_histogram * h, gsl_ntuple * ntuple,
gsl_ntuple_value_fn * value_func,
gsl_ntuple_select_fn * select_func)
{
size_t nread;
do
{
nread = fread (ntuple->ntuple_data, ntuple->size,
1, ntuple->file);
if (nread == 0 && feof(ntuple->file))
{
break ;
}
if (nread != 1)
{
GSL_ERROR ("failed to read ntuple for projection", GSL_EFAILED);
}
if (EVAL(select_func, ntuple->ntuple_data))
{
gsl_histogram_increment (h, EVAL(value_func, ntuple->ntuple_data));
}
}
while (1);
return GSL_SUCCESS;
}
/*
* gsl_ntuple_close:
* close the ntuple file and free the memory
*/
int
gsl_ntuple_close (gsl_ntuple * ntuple)
{
int status = fclose (ntuple->file);
if (status)
{
GSL_ERROR ("failed to close ntuple file", GSL_EFAILED);
}
free (ntuple);
return GSL_SUCCESS;
}
|
