freebsd-skq/lib/libI77/due.c
joerg 38d2602fc1 Update to the most recent version. Among other things, this also solves
the function naming problem for complex double function i've recently
aksed for in -committers.  (The recently committed rev 1.5 of proc.c
was actually also part of this update.)

Should the mailing lists come to an agreement that f2c better belongs
into the ports, this could be done nevertheless.  For the time being,
we've at least got a current version now.

Thanks, Steve!

Submitted by:	Steve Kargl <sgk@troutmask.apl.washington.edu>
1999-02-03 17:23:49 +00:00

71 lines
1.5 KiB
C

#include "f2c.h"
#include "fio.h"
#ifdef KR_headers
c_due(a) cilist *a;
#else
c_due(cilist *a)
#endif
{
if(!f__init) f_init();
f__sequential=f__formatted=f__recpos=0;
f__external=1;
f__curunit = &f__units[a->ciunit];
if(a->ciunit>=MXUNIT || a->ciunit<0)
err(a->cierr,101,"startio");
f__elist=a;
if(f__curunit->ufd==NULL && fk_open(DIR,UNF,a->ciunit) ) err(a->cierr,104,"due");
f__cf=f__curunit->ufd;
if(f__curunit->ufmt) err(a->cierr,102,"cdue")
if(!f__curunit->useek) err(a->cierr,104,"cdue")
if(f__curunit->ufd==NULL) err(a->cierr,114,"cdue")
if(a->cirec <= 0)
err(a->cierr,130,"due")
fseek(f__cf,(long)(a->cirec-1)*f__curunit->url,SEEK_SET);
f__curunit->uend = 0;
return(0);
}
#ifdef KR_headers
integer s_rdue(a) cilist *a;
#else
integer s_rdue(cilist *a)
#endif
{
int n;
f__reading=1;
if(n=c_due(a)) return(n);
if(f__curunit->uwrt && f__nowreading(f__curunit))
err(a->cierr,errno,"read start");
return(0);
}
#ifdef KR_headers
integer s_wdue(a) cilist *a;
#else
integer s_wdue(cilist *a)
#endif
{
int n;
f__reading=0;
if(n=c_due(a)) return(n);
if(f__curunit->uwrt != 1 && f__nowwriting(f__curunit))
err(a->cierr,errno,"write start");
return(0);
}
integer e_rdue(Void)
{
if(f__curunit->url==1 || f__recpos==f__curunit->url)
return(0);
fseek(f__cf,(long)(f__curunit->url-f__recpos),SEEK_CUR);
if(ftell(f__cf)%f__curunit->url)
err(f__elist->cierr,200,"syserr");
return(0);
}
integer e_wdue(Void)
{
#ifdef ALWAYS_FLUSH
if (fflush(f__cf))
err(f__elist->cierr,errno,"write end");
#endif
return(e_rdue());
}