1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2010 AT&T Intellectual Property * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Intellectual Property * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 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 30 int _sfputu(Sfio_t* f, Sfulong_t v) 31 #else 32 int _sfputu(f,v) 33 Sfio_t* f; /* write a portable ulong to this stream */ 34 Sfulong_t v; /* the unsigned value to be written */ 35 #endif 36 { 37 #define N_ARRAY (2*sizeof(Sfulong_t)) 38 reg uchar *s, *ps; 39 reg ssize_t n, p; 40 uchar c[N_ARRAY]; 41 SFMTXDECL(f); 42 43 SFMTXENTER(f, -1); 44 45 if(f->mode != SF_WRITE && _sfmode(f,SF_WRITE,0) < 0) 46 SFMTXRETURN(f, -1); 47 SFLOCK(f,0); 48 49 /* code v as integers in base SF_UBASE */ 50 s = ps = &(c[N_ARRAY-1]); 51 *s = (uchar)SFUVALUE(v); 52 while((v >>= SF_UBITS) ) 53 *--s = (uchar)(SFUVALUE(v) | SF_MORE); 54 n = (ps-s)+1; 55 56 if(n > 8 || SFWPEEK(f,ps,p) < n) 57 n = SFWRITE(f,(Void_t*)s,n); /* write the hard way */ 58 else 59 { switch(n) 60 { 61 case 8 : *ps++ = *s++; 62 case 7 : *ps++ = *s++; 63 case 6 : *ps++ = *s++; 64 case 5 : *ps++ = *s++; 65 case 4 : *ps++ = *s++; 66 case 3 : *ps++ = *s++; 67 case 2 : *ps++ = *s++; 68 case 1 : *ps++ = *s++; 69 } 70 f->next = ps; 71 } 72 73 SFOPEN(f,0); 74 SFMTXRETURN(f, (int)n); 75 } 76