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Length: 1654 (0x676)
Types: TextFile
Names: »bit2prim.c«
└─⟦3d0c2be1b⟧ Bits:30001254 ISODE-5.0 Tape
└─⟦eba4602b1⟧ »./isode-5.0.tar.Z«
└─⟦d3ac74d73⟧
└─⟦this⟧ »isode-5.0/psap/bit2prim.c«
/* bit2prim.c - bit string to presentation element */
#ifndef lint
static char *rcsid = "$Header: /f/osi/psap/RCS/bit2prim.c,v 6.0 89/03/18 23:38:09 mrose Rel $";
#endif
/*
* $Header: /f/osi/psap/RCS/bit2prim.c,v 6.0 89/03/18 23:38:09 mrose Rel $
*
*
* $Log: bit2prim.c,v $
* Revision 6.0 89/03/18 23:38:09 mrose
* Release 5.0
*
*/
/*
* NOTICE
*
* Acquisition, use, and distribution of this module and related
* materials are subject to the restrictions of a license agreement.
* Consult the Preface in the User's Manual for the full terms of
* this agreement.
*
*/
/* LINTLIBRARY */
#include <stdio.h>
#include "psap.h"
PE bit2prim_aux ();
/* \f
*/
PE bit2prim (pe)
register PE pe;
{
if (pe == NULLPE)
return NULLPE;
switch (pe -> pe_form) {
case PE_FORM_PRIM:
if (pe -> pe_prim == NULLPED) {
if ((pe -> pe_prim = PEDalloc (1)) == NULLPED)
return NULLPE;
pe -> pe_len = 1;
pe -> pe_nbits = 0;
}
/* and fall */
case PE_FORM_CONS:
if (bit2prim_aux (pe) == NULLPE)
return NULLPE;
break;
}
return pe;
}
/* \f
*/
static PE bit2prim_aux (pe)
register PE pe;
{
int i;
register PE p;
if (pe == NULLPE)
return NULLPE;
switch (pe -> pe_form) {
case PE_FORM_PRIM:
if (pe -> pe_prim && pe -> pe_len) {
if ((i = (((pe -> pe_len - 1) * 8) - pe -> pe_nbits)) > 7)
return pe_seterr (pe, PE_ERR_BITS, NULLPE);
pe -> pe_prim[0] = i & 0xff;
}
break;
case PE_FORM_CONS:
for (p = pe -> pe_cons; p; p = p -> pe_next)
if (bit2prim (p) == NULLPE)
return NULLPE;
break;
}
return pe;
}