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Fix printf errors in the hflag case.

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Fix old bug with bogus casing to (long).
Document the true limits of factor on 64-bit architectures.

Submitted by: bde
This commit is contained in:
imp 1999-01-06 19:46:56 +00:00
parent 4e8be77b96
commit 8a37fd8e59
3 changed files with 13 additions and 13 deletions
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12
games/factor/factor.6
View File

@ -52,12 +52,12 @@ factor, primes \- factor a number, generate primes
.SH DESCRIPTION
The
.I factor
utility will factor integers between 0 and 4294967295 inclusive.
When a number is factored, it is printed, followed by a ``:'',
and the list of factors on a single line.
Factors are listed in ascending order, and are preceded by a space.
If a factor divides a value more than once, it will be printed
more than once.
utility will factor integers between 0 and ULONG_MAX (4294967295 on 32
bit architectures, 18446744073709551615 on 64 bit ones), inclusive.
When a number is factored, it is printed, followed by a ``:'', and the
list of factors on a single line. Factors are listed in ascending
order, and are preceded by a space. If a factor divides a value more
than once, it will be printed more than once.
.PP
When
.I factor

10
games/factor/factor.c
View File

@ -173,7 +173,7 @@ pr_fact(val)
}
/* Factor value. */
(void)printf(hflag ? "0x%x:" : "%lu:", val);
(void)printf(hflag ? "0x%lx:" : "%lu:", val);
for (fact = &prime[0]; val > 1; ++fact) {
/* Look for the smallest factor. */
do {
@ -183,15 +183,15 @@ pr_fact(val)
/* Watch for primes larger than the table. */
if (fact > pr_limit) {
(void)printf(hflag ? " 0x%x" : " %lu", val);
(void)printf(hflag ? " 0x%lx" : " %lu", val);
break;
}
/* Divide factor out until none are left. */
do {
(void)printf(hflag ? " 0x%x" : " %lu", *fact);
val /= (long)*fact;
} while ((val % (long)*fact) == 0);
(void)printf(hflag ? " 0x%lx" : " %lu", *fact);
val /= *fact;
} while ((val % *fact) == 0);
/* Let the user know we're doing something. */
(void)fflush(stdout);

4
games/primes/primes.c
View File

@ -261,7 +261,7 @@ primes(start, stop)
for (p = &prime[0], factor = prime[0];
factor < stop && p <= pr_limit; factor = *(++p)) {
if (factor >= start) {
printf(hflag ? "0x%x\n" : "%lu\n", factor);
printf(hflag ? "0x%lx\n" : "%lu\n", factor);
}
}
/* return early if we are done */
@ -324,7 +324,7 @@ primes(start, stop)
*/
for (q = table; q < tab_lim; ++q, start+=2) {
if (*q) {
printf(hflag ? "0x%x\n" : "%lu\n", start);
printf(hflag ? "0x%lx\n" : "%lu\n", start);
}
}
}