[src/trunk]: src/games/primes No need to cast double to ubig (aka uintmax_t) ...

[jakllsch <jakllsch%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f9feb62b5d21
branches:  trunk
changeset: 768995:f9feb62b5d21
user:      jakllsch <jakllsch%NetBSD.org@localhost>
date:      Tue Aug 30 02:58:04 2011 +0000

description:
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.

diffstat:

 games/primes/primes.c |  9 ++++-----
 1 files changed, 4 insertions(+), 5 deletions(-)

diffs (32 lines):

diff -r fe3ba8c2b86e -r f9feb62b5d21 games/primes/primes.c
--- a/games/primes/primes.c     Tue Aug 30 02:53:01 2011 +0000
+++ b/games/primes/primes.c     Tue Aug 30 02:58:04 2011 +0000
@@ -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 @@
 #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 @@
                /* 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 */