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No need to cast double to ubig (aka uintmax_t) through int. 

This change prevents a modulo by zero in a invocation such as:
primes 18446744073709551000 18446744073709551615
on a LP64 machine.
This commit is contained in:
jakllsch 2011-08-30 02:58:04 +00:00
parent b509f991f8
commit 2ed951176c
1 changed files with 4 additions and 5 deletions
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9
games/primes/primes.c
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@ -1,4 +1,4 @@
/* $NetBSD: primes.c,v 1.18 2010/05/13 17:52:12 tnozaki Exp $ */
/* $NetBSD: primes.c,v 1.19 2011/08/30 02:58:04 jakllsch Exp $ */
/*
* Copyright (c) 1989, 1993
@ -42,7 +42,7 @@ __COPYRIGHT("@(#) Copyright (c) 1989, 1993\
#if 0
static char sccsid[] = "@(#)primes.c 8.5 (Berkeley) 5/10/95";
#else
__RCSID("$NetBSD: primes.c,v 1.18 2010/05/13 17:52:12 tnozaki Exp $");
__RCSID("$NetBSD: primes.c,v 1.19 2011/08/30 02:58:04 jakllsch Exp $");
#endif
#endif /* not lint */
@ -305,11 +305,10 @@ primes(ubig start, ubig stop)
/* note highest useful factor and sieve spot */
if (stop-start > TABSIZE+TABSIZE) {
tab_lim = &table[TABSIZE]; /* sieve it all */
fact_lim = (int)sqrt(
(double)(start)+TABSIZE+TABSIZE+1.0);
fact_lim = sqrt((double)(start)+TABSIZE+TABSIZE+1.0);
} else {
tab_lim = &table[(stop-start)/2]; /* partial sieve */
fact_lim = (int)sqrt((double)(stop)+1.0);
fact_lim = sqrt((double)(stop)+1.0);
}
/* sieve for factors >= 17 */
factor = 17; /* 17 is first prime to use */