worldstone benchmark script
. also imports seq(1) to help it . add -C option to time(1) to print tsc difference . increase col width for ministat for tsc numbers
This commit is contained in:
Ben Gras
parent
49532259e5
commit
bc0a39238e
2
.gitignore
vendored
2
.gitignore
vendored
@ -32,3 +32,5 @@ CVS
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.gitignore
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.svn
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minix-port.patch
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*.worldstone.log
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.worldstone*
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@ -33,7 +33,7 @@ SUBDIR= aal add_route adduser arp ash at autil awk \
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unstack update uud uue version vol wc \
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whereis which who write writeisofs fetch \
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xargs yacc yes zdump zic zmodem pkgin_cd \
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mktemp
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mktemp worldstone
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.if ${COMPILER_TYPE} == "gnu"
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SUBDIR += elf2aout
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@ -1,4 +1,5 @@
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PROG= time
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MAN=
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NEED_NBSDLIBC= yes
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.include <bsd.prog.mk>
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@ -11,6 +11,7 @@
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#include <unistd.h>
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#include <sys/wait.h>
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#include <minix/minlib.h>
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#include <minix/u64.h>
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#include <stdio.h>
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/* -DNEW prints time to 0.01 sec. */
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@ -33,7 +34,7 @@ int main(argc, argv)
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int argc;
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char *argv[];
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{
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int cycles = 0;
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struct tms pre_buf, post_buf;
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int status, pid;
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#if _VMD_EXT
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@ -42,12 +43,28 @@ char *argv[];
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struct tms dummy;
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int start_time, end_time;
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#endif
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u64_t start_tsc, end_tsc, spent_tsc;
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clock_t real_time;
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int c;
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if (argc == 1) exit(0);
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args = &argv[1];
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name = argv[1];
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while((c=getopt(argc, argv, "C")) != EOF) {
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switch(c) {
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case 'C':
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cycles = 1;
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break;
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default:
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fprintf(stderr, "usage: time [-C] <command>\n");
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exit(1);
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}
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}
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argv += optind;
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argc -= optind;
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args = &argv[0];
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name = argv[0];
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/* Get real time at start of run. */
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#if _VMD_EXT
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@ -55,6 +72,7 @@ char *argv[];
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#else
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start_time = times(&dummy);
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#endif
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read_tsc_64(&start_tsc);
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/* Fork off child. */
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if ((pid = fork()) < 0) {
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@ -70,6 +88,8 @@ char *argv[];
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do {
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times(&pre_buf);
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} while (wait(&status) != pid);
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read_tsc_64(&end_tsc);
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spent_tsc = sub64(end_tsc, start_tsc);
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#if _VMD_EXT
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(void) sysutime(UTIME_TIMEOFDAY, &end_time);
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real_time = (end_time.tv_sec - start_time.tv_sec) * CLOCKS_PER_SEC
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@ -82,6 +102,9 @@ char *argv[];
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if ((status & 0377) != 0) std_err("Command terminated abnormally.\n");
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times(&post_buf);
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if(cycles) {
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fprintf(stderr, "%qd tsc ", spent_tsc);
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}
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/* Print results. -DNEW enables time on one line to 0.01 sec */
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#ifndef NEW
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std_err("real ");
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4
commands/worldstone/Makefile
Normal file
4
commands/worldstone/Makefile
Normal file
@ -0,0 +1,4 @@
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SCRIPTS= worldstone.sh
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MAN= worldstone.1
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.include <bsd.prog.mk>
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85
commands/worldstone/worldstone.1
Normal file
85
commands/worldstone/worldstone.1
Normal file
@ -0,0 +1,85 @@
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.Dd $Mdocdate: September 22 2011 $
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.Dt WORLDSTONE 1
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.Os
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.Sh NAME
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.Nm worldstone
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.Nd shell script to consistently execute benchmarks
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.Sh SYNOPSIS
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.Nm worldstone
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.Op Fl n Ar iterations
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.Op Fl c Ar command
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.Op Fl p Ar command
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.Op Fl t Ar tag
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.Sh DESCRIPTION
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The
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.Nm
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utility is a shell script and takes care of some of the
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grunt work around benchmarking, in order to make it easier
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to get consistent and comparable benchmark results. Its basic
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operation is: execute the precommand, then execute and time
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the command, and do this a set number of iterations, and record
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the times in a logfile.
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Its features are:
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.Bl -tag -width Ds
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.It -
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It executes the precommand and command once without timing it
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in order to mitigate cold cache effects.
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.It -
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It allows a precommand to run before the command, so that the initial
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state can be set up by the precommand without it being part of the timing
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(e.g. make clean).
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.It -
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It redirects the stdout and stderr to /dev/null so that lots of output
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going over a network connection doesn't influence timing.
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.It -
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It does a sync before running the timed command, and makes sure a final
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sync is part of the timed command, to make the i/o more consistent.
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.It -
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It logs the times of each iteration in an easy-to-parse logfile.
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.It -
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It tries to guess a sensible log file name based on the current git
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branch in /usr/src.
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.El
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The options are as follows:
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.Bl -tag -width Ds
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.It Fl n Ar iterations
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Set the number of iterations to perform, after the initial run.
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The default is 5.
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.It Fl c Ar command
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Set the command to run to be timed. This is passed to sh -c, so shell constructs
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like loops etc. are okay to do. Default: make all.
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.It Fl p Ar command
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Set the pre-command to run. This command gets run before the timed command in order
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to make the timed command get a consistent state before it starts.
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Default: make clean.
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.It Fl t Ar tag
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Use the given tag name to modify the logfile that the utility uses
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to write its results in. The default is just 'time' plus the git branch you
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are currently on in /usr/src. In order for this to be useful you have to make sure the
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git branch you are on reflects the system you wish to benchmark of course.
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The script checks /usr/src/.git even if you are outside the /usr/src hierarchy
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(such as in pkgsrc).
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.El
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The script executes the commands the set number of iterations, redirecting stdout
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and stderr to /dev/null, and records the timed results in the logfile tagged with
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the given tag.
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.Nm
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executes
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.Xr time 1
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with the -C option, resulting in printing the 64-bit cpu cycle counter
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for both HZ-independent high resolution and an easy way not to have to convert minutes
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and seconds to seconds when parsing the results.
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.Pp
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You can feed the two separate logfiles directly to
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.Xr ministat 1
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to have it tell you the statistical properties of the two datasets, and judge whether
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there is a statistically significant difference.
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.Sh ENVIRONMENT
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The default commands, i.e. make all and make clean, can be modified by supplying a MAKE
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environment variable, so e.g. MAKE=bmake worldstone still does something sensible
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by default in /usr/pkgsrc directories.
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.Sh SEE ALSO
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.Xr ministat 1
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56
commands/worldstone/worldstone.sh
Normal file
56
commands/worldstone/worldstone.sh
Normal file
@ -0,0 +1,56 @@
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if [ ! "$MAKE" ]; then MAKE=make; fi
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ITERATIONS=5
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PRECMD="$MAKE clean"
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COMMAND="$MAKE all"
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TAG=time.$(basename $(git --git-dir=/usr/src/.git describe --all --dirty))
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set -e
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while getopts "n:d:p:c:r:" c
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do
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case "$c" in
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n) ITERATIONS=$OPTARG ;;
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p) PRECMD="$OPTARG" ;;
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c) COMMAND="$OPTARG" ;;
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t) TAG=$OPTARG ;;
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r) echo "Reading settings from $OPTARG"; cat $OPTARG; . $OPTARG ; echo "Reading done.";;
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*) exit 1 ;;
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esac
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done
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CONFIGPREFIX=".worldstone"
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CONFIGVARS="ITERATIONS PRECMD COMMAND MAKE"
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TMPF=.worldstone.tmpconfig.$$
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rm -f $TMPF
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for d in $CONFIGVARS
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do eval "echo $d=\\\"\$$d\\\"" >>$TMPF
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done
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CONFIGTAG=`crc <$TMPF | awk '{ print $1 }'`
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CONFIGFILE=$CONFIGPREFIX.$CONFIGTAG
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mv -f $TMPF $CONFIGFILE
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LOGFILE=$TAG.worldstone.log
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while [ -f $LOGFILE ]
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do echo "$0: WARNING: $LOGFILE already exists, appending."
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LOGFILE=$LOGFILE.next
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done
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echo "Logging to $LOGFILE."
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echo "First run."
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sh -c "$PRECMD"
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sh -c "$COMMAND"
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for n in `seq 1 $ITERATIONS`
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do echo -n "$n"
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sh -c "$PRECMD >/dev/null 2>&1"
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echo -n "."
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sync
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time -C sh -c "$COMMAND >/dev/null 2>&1; sync" 2>>$LOGFILE
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echo -n " "
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done
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echo "Done."
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echo "Time measurements logfile is $LOGFILE."
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echo "Config file is $CONFIGFILE."
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@ -2,7 +2,7 @@
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.SH NAME
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time \- report how long a command takes
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.SH SYNOPSIS
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\fBtime \fIcommand\fR
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\fBtime [-C] \fIcommand\fR
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.br
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.de FL
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.TP
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@ -14,6 +14,8 @@ time \- report how long a command takes
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\\fB\\$1\\fR
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# \\$2
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..
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The -C option tells time to report the cpu cycle counter
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difference.
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.SH EXAMPLES
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.EX "time a.out" "Report how long \fIa.out\fR takes"
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.EX "time ls \-l *.c" "Report how long \fIls\fR takes"
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@ -13,3 +13,4 @@ usr.bin/stat src/usr.bin/stat
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usr.bin/tic src/usr.bin/tic
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usr.bin/mkdep src/usr.bin/mkdep
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usr.bin/uniq src/usr.bin/uniq
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usr.bin/seq src/usr.bin/seq
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@ -3,7 +3,7 @@
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.include <bsd.own.mk>
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# NetBSD imports
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SUBDIR= indent m4 stat tic sed mkdep uniq
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SUBDIR= indent m4 stat tic sed mkdep uniq seq
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# Non-NetBSD imports
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SUBDIR+= ministat
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@ -222,7 +222,7 @@ static void
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Vitals(struct dataset *ds, int flag)
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{
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printf("%c %3d %13.8g %13.8g %13.8g %13.8g %13.8g", symbol[flag],
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printf("%c %3d %17.12g %17.12g %17.12g %17.12g %17.12g", symbol[flag],
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ds->n, Min(ds), Max(ds), Median(ds), Avg(ds), Stddev(ds));
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printf("\n");
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}
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7
usr.bin/seq/Makefile
Normal file
7
usr.bin/seq/Makefile
Normal file
@ -0,0 +1,7 @@
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# $NetBSD: Makefile,v 1.3 2009/04/14 22:15:26 lukem Exp $
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PROG= seq
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DPADD= ${LIBMATH}
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LDADD= -lm
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.include <bsd.prog.mk>
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187
usr.bin/seq/seq.1
Normal file
187
usr.bin/seq/seq.1
Normal file
@ -0,0 +1,187 @@
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.\" $NetBSD: seq.1,v 1.7 2010/05/27 08:30:35 dholland Exp $
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.\"
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.\" Copyright (c) 2005 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Brian Ginsbach.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
|
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.\" notice, this list of conditions and the following disclaimer.
|
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.\" 2. Redistributions in binary form must reproduce the above copyright
|
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.\" notice, this list of conditions and the following disclaimer in the
|
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\"
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.Dd May 27, 2010
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.Dt SEQ 1
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.Os
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.Sh NAME
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.Nm seq
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.Nd print sequences of numbers
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.Sh SYNOPSIS
|
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.Nm
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.Op Fl w
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.Op Fl f Ar format
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.Op Fl s Ar string
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.Op Fl t Ar string
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.Op Ar first Op Ar incr
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.Ar last
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.Sh DESCRIPTION
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The
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.Nm
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utility prints a sequence of numbers, one per line
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.Pq default ,
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from
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.Ar first
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.Pq default 1 ,
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to near
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.Ar last
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as possible, in increments of
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.Ar incr
|
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.Pq default 1 .
|
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When
|
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.Ar first
|
||||
is larger than
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.Ar last
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the default
|
||||
.Ar incr
|
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is -1.
|
||||
.Pp
|
||||
All numbers are interpreted as floating point.
|
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.Pp
|
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Normally integer values are printed as decimal integers.
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.Pp
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The
|
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.Nm
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utility accepts the following options:
|
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.Bl -tag -width Ar
|
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.It Fl f Ar format
|
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Use a
|
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.Xr printf 3
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style
|
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.Ar format
|
||||
to print each number.
|
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Only the
|
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.Cm A ,
|
||||
.Cm a ,
|
||||
.Cm E ,
|
||||
.Cm e ,
|
||||
.Cm F ,
|
||||
.Cm f ,
|
||||
.Cm G ,
|
||||
.Cm g ,
|
||||
and
|
||||
.Cm %
|
||||
conversion characters are valid, along with any optional
|
||||
flags and an optional numeric mimimum field width or precision.
|
||||
The
|
||||
.Ar format
|
||||
can contain character escape sequences in backslash notation as
|
||||
defined in
|
||||
.St -ansiC .
|
||||
The default is
|
||||
.Cm %g .
|
||||
.It Fl s Ar string
|
||||
Use
|
||||
.Ar string
|
||||
to separate numbers.
|
||||
The
|
||||
.Ar string
|
||||
can contain character escape sequences in backslash notation as
|
||||
defined in
|
||||
.St -ansiC .
|
||||
The default is
|
||||
.Cm \en .
|
||||
.It Fl t Ar string
|
||||
Use
|
||||
.Ar string
|
||||
to terminate sequence of numbers.
|
||||
The
|
||||
.Ar string
|
||||
can contain character escape sequences in backslash notation as
|
||||
defined in
|
||||
.St -ansiC .
|
||||
This option is useful when the default separator
|
||||
does not contain a
|
||||
.Cm \en .
|
||||
.It Fl w
|
||||
Equalize the widths of all numbers by padding with zeros as necessary.
|
||||
This option has no effect with the
|
||||
.Fl f
|
||||
option.
|
||||
If any sequence numbers will be printed in exponential notation,
|
||||
the default conversion is changed to
|
||||
.Cm %e .
|
||||
.El
|
||||
.Pp
|
||||
The
|
||||
.Nm
|
||||
utility exits 0 on success and non-zero if an error occurs.
|
||||
.Sh EXAMPLES
|
||||
.Bd -literal -offset indent
|
||||
# seq 1 3
|
||||
1
|
||||
2
|
||||
3
|
||||
|
||||
# seq 3 1
|
||||
3
|
||||
2
|
||||
1
|
||||
|
||||
# seq -w 0 .05 .1
|
||||
0.00
|
||||
0.05
|
||||
0.10
|
||||
.Ed
|
||||
.Sh SEE ALSO
|
||||
.Xr jot 1 ,
|
||||
.Xr printf 1 ,
|
||||
.Xr printf 3
|
||||
.Sh HISTORY
|
||||
The
|
||||
.Nm
|
||||
command first appeared in
|
||||
.Tn "Plan 9 from Bell Labs" .
|
||||
A
|
||||
.Nm
|
||||
command appeared in
|
||||
.Nx 3.0 .
|
||||
This command was based on the command of the same name in
|
||||
.Tn "Plan 9 from Bell Labs"
|
||||
and the
|
||||
.Tn GNU
|
||||
core utilities.
|
||||
The
|
||||
.Tn GNU
|
||||
.Nm
|
||||
command first appeared in the 1.13 shell utilities release.
|
||||
.Sh BUGS
|
||||
The
|
||||
.Fl w
|
||||
option does not handle the transition from pure floating point
|
||||
to exponent representation very well.
|
||||
The
|
||||
.Nm
|
||||
command is not bug for bug compatible with the
|
||||
.Tn "Plan 9 from Bell Labs"
|
||||
or
|
||||
.Tn GNU
|
||||
versions of
|
||||
.Nm .
|
||||
474
usr.bin/seq/seq.c
Normal file
474
usr.bin/seq/seq.c
Normal file
@ -0,0 +1,474 @@
|
||||
/*
|
||||
* Copyright (c) 2005 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Brian Ginsbach.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||||
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
||||
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
#ifndef lint
|
||||
__COPYRIGHT("@(#) Copyright (c) 2005\
|
||||
The NetBSD Foundation, Inc. All rights reserved.");
|
||||
__RCSID("$NetBSD: seq.c,v 1.7 2010/05/27 08:40:19 dholland Exp $");
|
||||
#endif /* not lint */
|
||||
|
||||
#include <ctype.h>
|
||||
#include <err.h>
|
||||
#include <errno.h>
|
||||
#include <math.h>
|
||||
#include <locale.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#define ZERO '0'
|
||||
#define SPACE ' '
|
||||
|
||||
#define MAX(a, b) (((a) < (b))? (b) : (a))
|
||||
#define ISSIGN(c) ((int)(c) == '-' || (int)(c) == '+')
|
||||
#define ISEXP(c) ((int)(c) == 'e' || (int)(c) == 'E')
|
||||
#define ISODIGIT(c) ((int)(c) >= '0' && (int)(c) <= '7')
|
||||
|
||||
/* Globals */
|
||||
|
||||
const char *decimal_point = "."; /* default */
|
||||
char default_format[] = { "%g" }; /* default */
|
||||
|
||||
/* Prototypes */
|
||||
|
||||
double e_atof(const char *);
|
||||
|
||||
int decimal_places(const char *);
|
||||
int main(int, char *[]);
|
||||
int numeric(const char *);
|
||||
int valid_format(const char *);
|
||||
|
||||
char *generate_format(double, double, double, int, char);
|
||||
char *unescape(char *);
|
||||
|
||||
/*
|
||||
* The seq command will print out a numeric sequence from 1, the default,
|
||||
* to a user specified upper limit by 1. The lower bound and increment
|
||||
* maybe indicated by the user on the command line. The sequence can
|
||||
* be either whole, the default, or decimal numbers.
|
||||
*/
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
int c = 0, errflg = 0;
|
||||
int equalize = 0;
|
||||
double first = 1.0;
|
||||
double last = 0.0;
|
||||
double incr = 0.0;
|
||||
struct lconv *locale;
|
||||
char *fmt = NULL;
|
||||
const char *sep = "\n";
|
||||
const char *term = NULL;
|
||||
char pad = ZERO;
|
||||
|
||||
/* Determine the locale's decimal point. */
|
||||
locale = localeconv();
|
||||
if (locale && locale->decimal_point && locale->decimal_point[0] != '\0')
|
||||
decimal_point = locale->decimal_point;
|
||||
|
||||
/*
|
||||
* Process options, but handle negative numbers separately
|
||||
* least they trip up getopt(3).
|
||||
*/
|
||||
while ((optind < argc) && !numeric(argv[optind]) &&
|
||||
(c = getopt(argc, argv, "f:hs:t:w")) != -1) {
|
||||
|
||||
switch (c) {
|
||||
case 'f': /* format (plan9) */
|
||||
fmt = optarg;
|
||||
equalize = 0;
|
||||
break;
|
||||
case 's': /* separator (GNU) */
|
||||
sep = unescape(optarg);
|
||||
break;
|
||||
case 't': /* terminator (new) */
|
||||
term = unescape(optarg);
|
||||
break;
|
||||
case 'w': /* equal width (plan9) */
|
||||
if (!fmt)
|
||||
if (equalize++)
|
||||
pad = SPACE;
|
||||
break;
|
||||
case 'h': /* help (GNU) */
|
||||
default:
|
||||
errflg++;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
argc -= optind;
|
||||
argv += optind;
|
||||
if (argc < 1 || argc > 3)
|
||||
errflg++;
|
||||
|
||||
if (errflg) {
|
||||
fprintf(stderr,
|
||||
"usage: %s [-w] [-f format] [-s string] [-t string] [first [incr]] last\n",
|
||||
getprogname());
|
||||
exit(1);
|
||||
}
|
||||
|
||||
last = e_atof(argv[argc - 1]);
|
||||
|
||||
if (argc > 1)
|
||||
first = e_atof(argv[0]);
|
||||
|
||||
if (argc > 2) {
|
||||
incr = e_atof(argv[1]);
|
||||
/* Plan 9/GNU don't do zero */
|
||||
if (incr == 0.0)
|
||||
errx(1, "zero %screment", (first < last)? "in" : "de");
|
||||
}
|
||||
|
||||
/* default is one for Plan 9/GNU work alike */
|
||||
if (incr == 0.0)
|
||||
incr = (first < last) ? 1.0 : -1.0;
|
||||
|
||||
if (incr <= 0.0 && first < last)
|
||||
errx(1, "needs positive increment");
|
||||
|
||||
if (incr >= 0.0 && first > last)
|
||||
errx(1, "needs negative decrement");
|
||||
|
||||
if (fmt != NULL) {
|
||||
if (!valid_format(fmt))
|
||||
errx(1, "invalid format string: `%s'", fmt);
|
||||
fmt = unescape(fmt);
|
||||
if (!valid_format(fmt))
|
||||
errx(1, "invalid format string");
|
||||
/*
|
||||
* XXX to be bug for bug compatible with Plan 9 add a
|
||||
* newline if none found at the end of the format string.
|
||||
*/
|
||||
} else
|
||||
fmt = generate_format(first, incr, last, equalize, pad);
|
||||
|
||||
if (incr > 0) {
|
||||
for (; first <= last; first += incr) {
|
||||
printf(fmt, first);
|
||||
fputs(sep, stdout);
|
||||
}
|
||||
} else {
|
||||
for (; first >= last; first += incr) {
|
||||
printf(fmt, first);
|
||||
fputs(sep, stdout);
|
||||
}
|
||||
}
|
||||
if (term != NULL)
|
||||
fputs(term, stdout);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*
|
||||
* numeric - verify that string is numeric
|
||||
*/
|
||||
int
|
||||
numeric(const char *s)
|
||||
{
|
||||
int seen_decimal_pt, decimal_pt_len;
|
||||
|
||||
/* skip any sign */
|
||||
if (ISSIGN((unsigned char)*s))
|
||||
s++;
|
||||
|
||||
seen_decimal_pt = 0;
|
||||
decimal_pt_len = strlen(decimal_point);
|
||||
while (*s) {
|
||||
if (!isdigit((unsigned char)*s)) {
|
||||
if (!seen_decimal_pt &&
|
||||
strncmp(s, decimal_point, decimal_pt_len) == 0) {
|
||||
s += decimal_pt_len;
|
||||
seen_decimal_pt = 1;
|
||||
continue;
|
||||
}
|
||||
if (ISEXP((unsigned char)*s)) {
|
||||
s++;
|
||||
if (ISSIGN((unsigned char)*s)) {
|
||||
s++;
|
||||
continue;
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
s++;
|
||||
}
|
||||
return (*s == '\0');
|
||||
}
|
||||
|
||||
/*
|
||||
* valid_format - validate user specified format string
|
||||
*/
|
||||
int
|
||||
valid_format(const char *fmt)
|
||||
{
|
||||
unsigned conversions = 0;
|
||||
|
||||
while (*fmt != '\0') {
|
||||
/* scan for conversions */
|
||||
if (*fmt != '%') {
|
||||
fmt++;
|
||||
continue;
|
||||
}
|
||||
fmt++;
|
||||
|
||||
/* allow %% but not things like %10% */
|
||||
if (*fmt == '%') {
|
||||
fmt++;
|
||||
continue;
|
||||
}
|
||||
|
||||
/* flags */
|
||||
while (*fmt != '\0' && strchr("#0- +'", *fmt)) {
|
||||
fmt++;
|
||||
}
|
||||
|
||||
/* field width */
|
||||
while (*fmt != '\0' && strchr("0123456789", *fmt)) {
|
||||
fmt++;
|
||||
}
|
||||
|
||||
/* precision */
|
||||
if (*fmt == '.') {
|
||||
fmt++;
|
||||
while (*fmt != '\0' && strchr("0123456789", *fmt)) {
|
||||
fmt++;
|
||||
}
|
||||
}
|
||||
|
||||
/* conversion */
|
||||
switch (*fmt) {
|
||||
case 'A':
|
||||
case 'a':
|
||||
case 'E':
|
||||
case 'e':
|
||||
case 'F':
|
||||
case 'f':
|
||||
case 'G':
|
||||
case 'g':
|
||||
/* floating point formats are accepted */
|
||||
conversions++;
|
||||
break;
|
||||
default:
|
||||
/* anything else is not */
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return (conversions <= 1);
|
||||
}
|
||||
|
||||
/*
|
||||
* unescape - handle C escapes in a string
|
||||
*/
|
||||
char *
|
||||
unescape(char *orig)
|
||||
{
|
||||
char c, *cp, *new = orig;
|
||||
int i;
|
||||
|
||||
for (cp = orig; (*orig = *cp); cp++, orig++) {
|
||||
if (*cp != '\\')
|
||||
continue;
|
||||
|
||||
switch (*++cp) {
|
||||
case 'a': /* alert (bell) */
|
||||
*orig = '\a';
|
||||
continue;
|
||||
case 'b': /* backspace */
|
||||
*orig = '\b';
|
||||
continue;
|
||||
case 'e': /* escape */
|
||||
*orig = '\e';
|
||||
continue;
|
||||
case 'f': /* formfeed */
|
||||
*orig = '\f';
|
||||
continue;
|
||||
case 'n': /* newline */
|
||||
*orig = '\n';
|
||||
continue;
|
||||
case 'r': /* carriage return */
|
||||
*orig = '\r';
|
||||
continue;
|
||||
case 't': /* horizontal tab */
|
||||
*orig = '\t';
|
||||
continue;
|
||||
case 'v': /* vertical tab */
|
||||
*orig = '\v';
|
||||
continue;
|
||||
case '\\': /* backslash */
|
||||
*orig = '\\';
|
||||
continue;
|
||||
case '\'': /* single quote */
|
||||
*orig = '\'';
|
||||
continue;
|
||||
case '\"': /* double quote */
|
||||
*orig = '"';
|
||||
continue;
|
||||
case '0':
|
||||
case '1':
|
||||
case '2':
|
||||
case '3': /* octal */
|
||||
case '4':
|
||||
case '5':
|
||||
case '6':
|
||||
case '7': /* number */
|
||||
for (i = 0, c = 0;
|
||||
ISODIGIT((unsigned char)*cp) && i < 3;
|
||||
i++, cp++) {
|
||||
c <<= 3;
|
||||
c |= (*cp - '0');
|
||||
}
|
||||
*orig = c;
|
||||
--cp;
|
||||
continue;
|
||||
case 'x': /* hexidecimal number */
|
||||
cp++; /* skip 'x' */
|
||||
for (i = 0, c = 0;
|
||||
isxdigit((unsigned char)*cp) && i < 2;
|
||||
i++, cp++) {
|
||||
c <<= 4;
|
||||
if (isdigit((unsigned char)*cp))
|
||||
c |= (*cp - '0');
|
||||
else
|
||||
c |= ((toupper((unsigned char)*cp) -
|
||||
'A') + 10);
|
||||
}
|
||||
*orig = c;
|
||||
--cp;
|
||||
continue;
|
||||
default:
|
||||
--cp;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return (new);
|
||||
}
|
||||
|
||||
/*
|
||||
* e_atof - convert an ASCII string to a double
|
||||
* exit if string is not a valid double, or if converted value would
|
||||
* cause overflow or underflow
|
||||
*/
|
||||
double
|
||||
e_atof(const char *num)
|
||||
{
|
||||
char *endp;
|
||||
double dbl;
|
||||
|
||||
errno = 0;
|
||||
dbl = strtod(num, &endp);
|
||||
|
||||
if (errno == ERANGE)
|
||||
/* under or overflow */
|
||||
err(2, "%s", num);
|
||||
else if (*endp != '\0')
|
||||
/* "junk" left in number */
|
||||
errx(2, "invalid floating point argument: %s", num);
|
||||
|
||||
/* zero shall have no sign */
|
||||
if (dbl == -0.0)
|
||||
dbl = 0;
|
||||
return (dbl);
|
||||
}
|
||||
|
||||
/*
|
||||
* decimal_places - count decimal places in a number (string)
|
||||
*/
|
||||
int
|
||||
decimal_places(const char *number)
|
||||
{
|
||||
int places = 0;
|
||||
char *dp;
|
||||
|
||||
/* look for a decimal point */
|
||||
if ((dp = strstr(number, decimal_point))) {
|
||||
dp += strlen(decimal_point);
|
||||
|
||||
while (isdigit((unsigned char)*dp++))
|
||||
places++;
|
||||
}
|
||||
return (places);
|
||||
}
|
||||
|
||||
/*
|
||||
* generate_format - create a format string
|
||||
*
|
||||
* XXX to be bug for bug compatable with Plan9 and GNU return "%g"
|
||||
* when "%g" prints as "%e" (this way no width adjustments are made)
|
||||
*/
|
||||
char *
|
||||
generate_format(double first, double incr, double last, int equalize, char pad)
|
||||
{
|
||||
static char buf[256];
|
||||
char cc = '\0';
|
||||
int precision, width1, width2, places;
|
||||
|
||||
if (equalize == 0)
|
||||
return (default_format);
|
||||
|
||||
/* figure out "last" value printed */
|
||||
if (first > last)
|
||||
last = first - incr * floor((first - last) / incr);
|
||||
else
|
||||
last = first + incr * floor((last - first) / incr);
|
||||
|
||||
sprintf(buf, "%g", incr);
|
||||
if (strchr(buf, 'e'))
|
||||
cc = 'e';
|
||||
precision = decimal_places(buf);
|
||||
|
||||
width1 = sprintf(buf, "%g", first);
|
||||
if (strchr(buf, 'e'))
|
||||
cc = 'e';
|
||||
if ((places = decimal_places(buf)))
|
||||
width1 -= (places + strlen(decimal_point));
|
||||
|
||||
precision = MAX(places, precision);
|
||||
|
||||
width2 = sprintf(buf, "%g", last);
|
||||
if (strchr(buf, 'e'))
|
||||
cc = 'e';
|
||||
if ((places = decimal_places(buf)))
|
||||
width2 -= (places + strlen(decimal_point));
|
||||
|
||||
if (precision) {
|
||||
sprintf(buf, "%%%c%d.%d%c", pad,
|
||||
MAX(width1, width2) + (int) strlen(decimal_point) +
|
||||
precision, precision, (cc) ? cc : 'f');
|
||||
} else {
|
||||
sprintf(buf, "%%%c%d%c", pad, MAX(width1, width2),
|
||||
(cc) ? cc : 'g');
|
||||
}
|
||||
|
||||
return (buf);
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user