1 /***********************************************************************
2 * *
3 * This software is part of the ast package *
4 * Copyright (c) 1985-2011 AT&T Intellectual Property *
5 * and is licensed under the *
6 * Eclipse Public License, Version 1.0 *
7 * by AT&T Intellectual Property *
8 * *
9 * A copy of the License is available at *
10 * http://www.eclipse.org/org/documents/epl-v10.html *
11 * (with md5 checksum b35adb5213ca9657e911e9befb180842) *
12 * *
13 * Information and Software Systems Research *
14 * AT&T Research *
15 * Florham Park NJ *
16 * *
17 * Glenn Fowler <gsf@research.att.com> *
18 * David Korn <dgk@research.att.com> *
19 * Phong Vo <kpv@research.att.com> *
20 * *
21 ***********************************************************************/
22 #include "sfhdr.h"
23
24 /* Write out an unsigned long value in a portable format.
25 **
26 ** Written by Kiem-Phong Vo.
27 */
28
29 #if __STD_C
_sfputm(Sfio_t * f,Sfulong_t v,Sfulong_t m)30 int _sfputm(Sfio_t* f, Sfulong_t v, Sfulong_t m)
31 #else
32 int _sfputm(f,v,m)
33 Sfio_t* f; /* write a portable ulong to this stream */
34 Sfulong_t v; /* the unsigned value to be written */
35 Sfulong_t m; /* the max value of the range */
36 #endif
37 {
38 #define N_ARRAY (2*sizeof(Sfulong_t))
39 reg uchar *s, *ps;
40 reg ssize_t n, p;
41 uchar c[N_ARRAY];
42 SFMTXDECL(f);
43
44 SFMTXENTER(f, -1);
45
46 if(v > m || (f->mode != SF_WRITE && _sfmode(f,SF_WRITE,0) < 0) )
47 SFMTXRETURN(f, -1);
48 SFLOCK(f,0);
49
50 /* code v as integers in base SF_UBASE */
51 s = ps = &(c[N_ARRAY-1]);
52 *s = (uchar)SFBVALUE(v);
53 while((m >>= SF_BBITS) > 0 )
54 { v >>= SF_BBITS;
55 *--s = (uchar)SFBVALUE(v);
56 }
57 n = (ps-s)+1;
58
59 if(n > 8 || SFWPEEK(f,ps,p) < n)
60 n = SFWRITE(f,(Void_t*)s,n); /* write the hard way */
61 else
62 { switch(n)
63 {
64 case 8 : *ps++ = *s++;
65 /* FALLTHROUGH */
66 case 7 : *ps++ = *s++;
67 /* FALLTHROUGH */
68 case 6 : *ps++ = *s++;
69 /* FALLTHROUGH */
70 case 5 : *ps++ = *s++;
71 /* FALLTHROUGH */
72 case 4 : *ps++ = *s++;
73 /* FALLTHROUGH */
74 case 3 : *ps++ = *s++;
75 /* FALLTHROUGH */
76 case 2 : *ps++ = *s++;
77 /* FALLTHROUGH */
78 case 1 : *ps++ = *s++;
79 }
80 f->next = ps;
81 }
82
83 SFOPEN(f,0);
84 SFMTXRETURN(f, (int)n);
85 }
86