forked from Reen/gnuplot
-
Notifications
You must be signed in to change notification settings - Fork 3
Expand file tree
/
Copy pathcorplot.c
More file actions
77 lines (67 loc) · 2.46 KB
/
corplot.c
File metadata and controls
77 lines (67 loc) · 2.46 KB
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
#ifndef lint
static char *RCSid() { return RCSid("$Id: corplot.c,v 1.7 2008/03/30 03:27:54 sfeam Exp $"); }
#endif
/* GNUPLOT - corplot.c */
/*[
* Copyright 1986 - 1993, 1998, 2004 Thomas Williams, Colin Kelley
*
* Permission to use, copy, and distribute this software and its
* documentation for any purpose with or without fee is hereby granted,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation.
*
* Permission to modify the software is granted, but not the right to
* distribute the complete modified source code. Modifications are to
* be distributed as patches to the released version. Permission to
* distribute binaries produced by compiling modified sources is granted,
* provided you
* 1. distribute the corresponding source modifications from the
* released version in the form of a patch file along with the binaries,
* 2. add special version identification to distinguish your version
* in addition to the base release version number,
* 3. provide your name and address as the primary contact for the
* support of your modified version, and
* 4. retain our contact information in regard to use of the base
* software.
* Permission to distribute the released version of the source code along
* with corresponding source modifications in the form of a patch file is
* granted with same provisions 2 through 4 for binary distributions.
*
* This software is provided "as is" without express or implied warranty
* to the extent permitted by applicable law.
]*/
#include <stdio.h>
#include <process.h>
#include <dos.h>
#define BOUNDARY 32768
#define segment(addr) (FP_SEG(m) + ((FP_OFF(m)+15) >> 4));
#define round(value,boundary) (((value) + (boundary) - 1) & ~((boundary) - 1))
char *malloc(), *realloc();
char prog[] = "gnuplot";
char corscreen[] = "CORSCREEN=0";
int
main()
{
unsigned int segm, start;
char *m;
if (!(m = malloc(BOUNDARY))) {
printf("malloc() failed\n");
exit(1);
}
segm = segment(m);
start = round(segm, BOUNDARY / 16);
if (realloc(m, BOUNDARY + (start - segm) * 16) != m) {
printf("can't realloc() memory\n");
exit(2);
}
if ((segm = start >> 11) >= 8) {
printf("not enough room in first 256K\n");
exit(3);
}
corscreen[sizeof(corscreen) - 2] = '0' + segm;
if (putenv(corscreen))
perror("putenv");
if (spawnlp(P_WAIT, prog, prog, NULL))
perror("spawnlp");
}