DataMuseum.dk

Presents historical artifacts from the history of:

DKUUG/EUUG Conference tapes

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Index: T p

⟦af144a439⟧ TextFile

    Length: 1178 (0x49a)
    Types: TextFile
    Names: »prim2num.c«

Derivation

└─⟦2d1937cfd⟧ Bits:30007241 EUUGD22: P.P 5.0
    └─⟦041b9c0f8⟧ »EurOpenD22/isode/pepsy.system-6.0.Z« 
        └─⟦d49939f05⟧ 
            └─⟦6a28ec38e⟧ »pepsy.tar« 
                └─⟦this⟧ »pepsy/prim2num.c« 

TextFile

/* prim2num.c - presentation element to integer */

#ifndef	lint
static char *rcsid = "$Header: /f/iso/psap/RCS/prim2num.c,v 5.0 88/07/21 14:54:01 mrose Rel $";
#endif

/* 
 * $Header: /f/iso/psap/RCS/prim2num.c,v 5.0 88/07/21 14:54:01 mrose Rel $
 *
 *
 * $Log:	prim2num.c,v $
 * Revision 5.0  88/07/21  14:54:01  mrose
 * Release 4.0
 * 
 */

/*
 *				  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"

/* \f

 */

int	prim2num (pe)
register PE	pe;
{
    register int    i;
    register PElementData dp,
			  ep;

    if (pe -> pe_form != PE_FORM_PRIM || pe -> pe_prim == NULLPED)
	return pe_seterr (pe, PE_ERR_PRIM, NOTOK);
    if (pe -> pe_len > sizeof (int))
	return pe_seterr (pe, PE_ERR_OVER, NOTOK);

    pe -> pe_errno = PE_ERR_NONE;/* in case integer is NOTOK-valued */
    i = (*(dp = pe -> pe_prim) & 0x80) ? (-1) : 0;
    for (ep = dp + pe -> pe_len; dp < ep;)
	i = (i << 8) | (*dp++ & 0xff);

    return i;
}