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| author | William Joye <wjoye@cfa.harvard.edu> | 2016-12-21 22:46:09 (GMT) |
|---|---|---|
| committer | William Joye <wjoye@cfa.harvard.edu> | 2016-12-21 22:46:09 (GMT) |
| commit | 768f87f613cc9789fcf8073018fa02178c8c91df (patch) | |
| tree | ec633f5608ef498bee52a5f42c12c49493ec8bf8 /tcl8.6/doc/time.n | |
| parent | 07e464099b99459d0a37757771791598ef3395d9 (diff) | |
| parent | 05fa4c89f20e9769db0e6c0b429cef2590771ace (diff) | |
| download | blt-768f87f613cc9789fcf8073018fa02178c8c91df.zip blt-768f87f613cc9789fcf8073018fa02178c8c91df.tar.gz blt-768f87f613cc9789fcf8073018fa02178c8c91df.tar.bz2 | |
Merge commit '05fa4c89f20e9769db0e6c0b429cef2590771ace' as 'tcl8.6'
Diffstat (limited to 'tcl8.6/doc/time.n')
| -rw-r--r-- | tcl8.6/doc/time.n | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/tcl8.6/doc/time.n b/tcl8.6/doc/time.n new file mode 100644 index 0000000..35b41c4 --- /dev/null +++ b/tcl8.6/doc/time.n @@ -0,0 +1,47 @@ +'\" +'\" Copyright (c) 1993 The Regents of the University of California. +'\" Copyright (c) 1994-1996 Sun Microsystems, Inc. +'\" +'\" See the file "license.terms" for information on usage and redistribution +'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. +'\" +.TH time n "" Tcl "Tcl Built-In Commands" +.so man.macros +.BS +'\" Note: do not modify the .SH NAME line immediately below! +.SH NAME +time \- Time the execution of a script +.SH SYNOPSIS +\fBtime \fIscript\fR ?\fIcount\fR? +.BE +.SH DESCRIPTION +.PP +This command will call the Tcl interpreter \fIcount\fR +times to evaluate \fIscript\fR (or once if \fIcount\fR is not +specified). It will then return a string of the form +.PP +.CS +\fB503.2 microseconds per iteration\fR +.CE +.PP +which indicates the average amount of time required per iteration, +in microseconds. +Time is measured in elapsed time, not CPU time. +.SH EXAMPLE +Estimate how long it takes for a simple Tcl \fBfor\fR loop to count to +a thousand: +.PP +.CS +time { + for {set i 0} {$i<1000} {incr i} { + # empty body + } +} +.CE +.SH "SEE ALSO" +clock(n) +.SH KEYWORDS +script, time +.\" Local Variables: +.\" mode: nroff +.\" End: |