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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2009 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#include "sfhdr.h"
/* Write out a long value in a portable format
**
** Written by Kiem-Phong Vo.
*/
#if __STD_C
int _sfputl(Sfio_t* f, Sflong_t v)
#else
int _sfputl(f,v)
Sfio_t* f; /* write a portable long to this stream */
Sflong_t v; /* the value to be written */
#endif
{
#define N_ARRAY (2*sizeof(Sflong_t))
reg uchar *s, *ps;
reg ssize_t n, p;
uchar c[N_ARRAY];
SFMTXDECL(f);
SFMTXENTER(f,-1);
if(f->mode != SF_WRITE && _sfmode(f,SF_WRITE,0) < 0)
SFMTXRETURN(f, -1);
SFLOCK(f,0);
s = ps = &(c[N_ARRAY-1]);
if(v < 0)
{ /* add 1 to avoid 2-complement problems with -SF_MAXINT */
v = -(v+1);
*s = (uchar)(SFSVALUE(v) | SF_SIGN);
}
else *s = (uchar)(SFSVALUE(v));
v = (Sfulong_t)v >> SF_SBITS;
while(v > 0)
{ *--s = (uchar)(SFUVALUE(v) | SF_MORE);
v = (Sfulong_t)v >> SF_UBITS;
}
n = (ps-s)+1;
if(n > 8 || SFWPEEK(f,ps,p) < n)
n = SFWRITE(f,(Void_t*)s,n); /* write the hard way */
else
{ switch(n)
{
case 8 : *ps++ = *s++;
case 7 : *ps++ = *s++;
case 6 : *ps++ = *s++;
case 5 : *ps++ = *s++;
case 4 : *ps++ = *s++;
case 3 : *ps++ = *s++;
case 2 : *ps++ = *s++;
case 1 : *ps++ = *s++;
}
f->next = ps;
}
SFOPEN(f,0);
SFMTXRETURN(f, n);
}
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