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Annotation of 43BSDReno/contrib/isode-beta/psap/num2prim.c, revision 1.1.1.1

1.1       root        1: /* num2prim.c - integer to presentation element */
                      2: 
                      3: #ifndef        lint
                      4: static char *rcsid = "$Header: /f/osi/psap/RCS/num2prim.c,v 7.0 89/11/23 22:12:45 mrose Rel $";
                      5: #endif
                      6: 
                      7: /* 
                      8:  * $Header: /f/osi/psap/RCS/num2prim.c,v 7.0 89/11/23 22:12:45 mrose Rel $
                      9:  *
                     10:  *
                     11:  * $Log:       num2prim.c,v $
                     12:  * Revision 7.0  89/11/23  22:12:45  mrose
                     13:  * Release 6.0
                     14:  * 
                     15:  */
                     16: 
                     17: /*
                     18:  *                               NOTICE
                     19:  *
                     20:  *    Acquisition, use, and distribution of this module and related
                     21:  *    materials are subject to the restrictions of a license agreement.
                     22:  *    Consult the Preface in the User's Manual for the full terms of
                     23:  *    this agreement.
                     24:  *
                     25:  */
                     26: 
                     27: 
                     28: /* LINTLIBRARY */
                     29: 
                     30: #include <stdio.h>
                     31: #include "psap.h"
                     32: 
                     33: /*  */
                     34: 
                     35: PE     num2prim (i, class, id)
                     36: register integer i;
                     37: PElementClass  class;
                     38: PElementID     id;
                     39: {
                     40:     register integer mask,
                     41:                     sign,
                     42:                     n;
                     43:     register PElementData dp;
                     44:     register PE            pe;
                     45: 
                     46:     if ((pe = pe_alloc (class, PE_FORM_PRIM, id)) == NULLPE)
                     47:        return NULLPE;
                     48: 
                     49:     sign = i >= 0 ? i : i ^ (-1);
                     50:     mask = 0x1ff << (((n = sizeof i) - 1) * 8 - 1);
                     51:     while (n > 1 && (sign & mask) == 0)
                     52:        mask >>= 8, n--;
                     53: 
                     54:     if ((pe -> pe_prim = PEDalloc (n)) == NULLPED) {
                     55:        pe_free (pe);
                     56:        return NULLPE;
                     57:     }
                     58: 
                     59:     for (dp = pe -> pe_prim + (pe -> pe_len = n); n-- > 0; i >>= 8)
                     60:        *--dp = i & 0xff;
                     61: 
                     62:     return pe;
                     63: }

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