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a4f6c1fa94
bsdgames/debian/patches/primes-Update-to-NetBSD-CVS-2012-02-16.patch
Tobias Quathamer a4f6c1fa94 Imported Debian patch 2.17-20
2012-02-25 18:04:35 +01:00

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From: Tobias Quathamer <toddy@debian.org>
Date: Thu, 16 Feb 2012 13:05:28 +0100
Subject: primes: Update to NetBSD CVS, 2012-02-16
---
primes/primes.6 | 10 ++++++-
primes/primes.c | 67 +++++++++++++++++++++++++++++++++---------------------
2 files changed, 49 insertions(+), 28 deletions(-)
diff --git a/primes/primes.6 b/primes/primes.6
index 14d5101..9499398 100644
--- a/primes/primes.6
+++ b/primes/primes.6
@@ -1,4 +1,4 @@
-.\" $NetBSD: primes.6,v 1.2 2004/02/09 23:25:47 wiz Exp $
+.\" $NetBSD: primes.6,v 1.3 2008/02/03 03:29:17 wiz Exp $
.\"
.\" Copyright (c) 1989, 1993
.\" The Regents of the University of California. All rights reserved.
@@ -37,7 +37,7 @@
.\"
.\" chongo <for a good prime call: 391581 * 2^216193 - 1> /\oo/\
.\"
-.Dd February 8, 2004
+.Dd February 3, 2008
.Dt PRIMES 6
.Os
.Sh NAME
@@ -45,6 +45,7 @@
.Nd generate primes
.Sh SYNOPSIS
.Nm primes
+.Op Fl d
.Op Ar start Op Ar stop
.Sh DESCRIPTION
The
@@ -80,6 +81,11 @@ The
.Ar start
value is terminated by a non-digit character (such as a newline).
The input line must not be longer than 255 characters.
+When given the
+.Fl d
+argument,
+.Nm
+prints the difference between the current and the previous prime.
.Sh DIAGNOSTICS
Out of range or invalid input results in
an appropriate error message
diff --git a/primes/primes.c b/primes/primes.c
index 2d93594..4693968 100644
--- a/primes/primes.c
+++ b/primes/primes.c
@@ -1,4 +1,4 @@
-/* $NetBSD: primes.c,v 1.12 2004/01/27 20:30:30 jsm Exp $ */
+/* $NetBSD: primes.c,v 1.19 2011/08/30 02:58:04 jakllsch Exp $ */
/*
* Copyright (c) 1989, 1993
@@ -34,15 +34,15 @@
#include <sys/cdefs.h>
#ifndef lint
-__COPYRIGHT("@(#) Copyright (c) 1989, 1993\n\
- The Regents of the University of California. All rights reserved.\n");
+__COPYRIGHT("@(#) Copyright (c) 1989, 1993\
+ The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)primes.c 8.5 (Berkeley) 5/10/95";
#else
-__RCSID("$NetBSD: primes.c,v 1.12 2004/01/27 20:30:30 jsm Exp $");
+__RCSID("$NetBSD: primes.c,v 1.19 2011/08/30 02:58:04 jakllsch Exp $");
#endif
#endif /* not lint */
@@ -84,7 +84,7 @@ __RCSID("$NetBSD: primes.c,v 1.12 2004/01/27 20:30:30 jsm Exp $");
*
* We make TABSIZE large to reduce the overhead of inner loop setup.
*/
-char table[TABSIZE]; /* Eratosthenes sieve of odd numbers */
+static char table[TABSIZE]; /* Eratosthenes sieve of odd numbers */
/*
* prime[i] is the (i-1)th prime.
@@ -103,15 +103,14 @@ extern const ubig *pr_limit; /* largest prime in the prime array */
extern const char pattern[];
extern const int pattern_size; /* length of pattern array */
-int main(int, char *[]);
-void primes(ubig, ubig);
-ubig read_num_buf(void);
-void usage(void) __attribute__((__noreturn__));
+static int dflag;
+
+static void primes(ubig, ubig);
+static ubig read_num_buf(void);
+static void usage(void) __dead;
int
-main(argc, argv)
- int argc;
- char *argv[];
+main(int argc, char *argv[])
{
ubig start; /* where to start generating */
ubig stop; /* don't generate at or above this value */
@@ -121,8 +120,11 @@ main(argc, argv)
/* Revoke setgid privileges */
setregid(getgid(), getgid());
- while ((ch = getopt(argc, argv, "")) != -1)
+ while ((ch = getopt(argc, argv, "d")) != -1)
switch (ch) {
+ case 'd':
+ dflag++;
+ break;
case '?':
default:
usage();
@@ -189,7 +191,7 @@ main(argc, argv)
* This routine returns a number n, where 0 <= n && n <= BIG.
*/
ubig
-read_num_buf()
+read_num_buf(void)
{
ubig val;
char *p, buf[100]; /* > max number of digits. */
@@ -200,7 +202,7 @@ read_num_buf()
err(1, "stdin");
exit(0);
}
- for (p = buf; isblank(*p); ++p);
+ for (p = buf; isblank((unsigned char)*p); ++p);
if (*p == '\n' || *p == '\0')
continue;
if (*p == '-')
@@ -217,11 +219,12 @@ read_num_buf()
/*
* primes - sieve and print primes from start up to and but not including stop
+ *
+ * start where to start generating
+ * stop don't generate at or above this value
*/
void
-primes(start, stop)
- ubig start; /* where to start generating */
- ubig stop; /* don't generate at or above this value */
+primes(ubig start, ubig stop)
{
char *q; /* sieve spot */
ubig factor; /* index and factor */
@@ -229,6 +232,7 @@ primes(start, stop)
const ubig *p; /* prime table pointer */
ubig fact_lim; /* highest prime for current block */
ubig mod; /* temp storage for mod */
+ ubig prev = 0;
/*
* A number of systems can not convert double values into unsigned
@@ -263,8 +267,14 @@ primes(start, stop)
for (p = &prime[0], factor = prime[0];
factor < stop && p <= pr_limit; factor = *(++p)) {
if (factor >= start) {
- printf("%lu\n", (unsigned long) factor);
+ printf("%lu", (unsigned long) factor);
+ if (dflag) {
+ printf(" (%lu)",
+ (unsigned long) factor - prev);
+ }
+ putchar('\n');
}
+ prev = factor;
}
/* return early if we are done */
if (p <= pr_limit) {
@@ -298,11 +308,10 @@ primes(start, 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 */
@@ -315,7 +324,7 @@ primes(start, stop)
} else {
q = &table[mod ? factor-(mod/2) : 0];
}
- /* sive for our current factor */
+ /* sieve for our current factor */
for ( ; q < tab_lim; q += factor) {
*q = '\0'; /* sieve out a spot */
}
@@ -326,15 +335,21 @@ primes(start, stop)
*/
for (q = table; q < tab_lim; ++q, start+=2) {
if (*q) {
- printf("%lu\n", (unsigned long) start);
+ printf("%lu", (unsigned long) start);
+ if (dflag) {
+ printf(" (%lu)",
+ (unsigned long) start - prev);
+ prev = start;
+ }
+ putchar('\n');
}
}
}
}
void
-usage()
+usage(void)
{
- (void)fprintf(stderr, "usage: primes [start [stop]]\n");
+ (void)fprintf(stderr, "usage: primes [-d] [start [stop]]\n");
exit(1);
}
--
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