FROMHEXU.C (for Macintosh)
Mike Simpson
msimpson at bbncca.ARPA
Tue Oct 30 02:24:22 AEST 1984
/* fromhex.c, UNIX version */
#include <stdio.h>
int bytes,sum;
main()
{
register i,v;
register n;
n = 0;
v = 0;
while ((i = getchar()) != EOF) {
i &= 0177;
if (i == '|')
break;
if (i < 0100 || i > 0117)
continue;
v = (v << 4) | (i & 0xF);
if ((++n & 1) == 0) {
putchar(v);
sum += v;
v = 0;
bytes++;
}
}
n = 0;
for (i = 0 ; i < 8 ; i++)
n = (n << 4) | (getchar() & 0xF);
if (n != (bytes + sum))
fprintf(stderr, "bad checksum\n");
else
fprintf(stderr, "checksum good!\n");
exit(0);
}
--
>> don't shoot me, I'm just trying to be helpful ... <<
Mike Simpson, BBN
msimpson at bbnccf (Arpanet/Internet/CSNet)
{decvax,ihnp4,ima,linus,masscomp,sunybcs,wjh12}!bbncca!msimpson (Usenet)
617-497-2819 (Ma Bell)
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