1 /* PSPP - computes sample statistics.
2 Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
3 Written by Ben Pfaff <blp@gnu.org>.
5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 This program is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20 /* PORTME: There might easily be alignment problems with some of these
23 #include <libpspp/compiler.h>
27 /* This attribute might avoid some problems. On the other hand... */
28 #define P ATTRIBUTE ((packed))
31 #pragma option -a- /* Turn off alignment. */
34 /* Find 64-bit floating-point type. */
37 #define FLT64_MAX FLT_MAX
38 #elif SIZEOF_DOUBLE == 8
40 #define FLT64_MAX DBL_MAX
41 #elif SIZEOF_LONG_DOUBLE == 8
42 #define flt64 long double
43 #define FLT64_MAX LDBL_MAX
45 #error Which one of your basic types is 64-bit floating point?
47 #define FLT64_MAX DBL_MAX
50 /* Figure out SYSMIS value for flt64. */
51 #include <libpspp/magic.h>
52 #if SIZEOF_DOUBLE == 8
53 #define second_lowest_flt64 second_lowest_value
55 #error Must define second_lowest_flt64 for your architecture.
58 /* Record Type 1: General Information. */
61 char rec_type[4] P; /* 00: Record-type code, "$FL2". */
62 char prod_name[60] P; /* 04: Product identification. */
63 int32_t layout_code P; /* 40: 2. */
64 int32_t case_size P; /* 44: Number of `value's per case.
65 Note: some systems set this to -1 */
66 int32_t compress P; /* 48: 1=compressed, 0=not compressed. */
67 int32_t weight_idx P; /* 4c: 1-based index of weighting var, or 0. */
68 int32_t case_cnt P; /* 50: Number of cases, -1 if unknown. */
69 flt64 bias P; /* 54: Compression bias (100.0). */
70 char creation_date[9] P; /* 5c: `dd mmm yy' creation date of file. */
71 char creation_time[8] P; /* 65: `hh:mm:ss' 24-hour creation time. */
72 char file_label[64] P; /* 6d: File label. */
73 char padding[3] P; /* ad: Ignored padding. */
76 /* Record Type 2: Variable. */
77 struct sysfile_variable
79 int32_t rec_type P; /* 2. */
80 int32_t type P; /* 0=numeric, 1-255=string width,
81 -1=continued string. */
82 int32_t has_var_label P; /* 1=has a variable label, 0=doesn't. */
83 int32_t n_missing_values P; /* Missing value code of -3,-2,0,1,2, or 3. */
84 int32_t print P; /* Print format. */
85 int32_t write P; /* Write format. */
86 char name[SHORT_NAME_LEN] P; /* Variable name. */
87 /* The rest of the structure varies. */