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author | William Joye <wjoye@cfa.harvard.edu> | 2017-09-22 18:57:19 (GMT) |
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committer | William Joye <wjoye@cfa.harvard.edu> | 2017-09-22 18:57:19 (GMT) |
commit | 2aff4a96fa0286d875bddec0019648e2c6431cbc (patch) | |
tree | f7a9a4800a3f3ad4b77470b8383529176d8b7181 /tcl8.6/doc/time.n | |
parent | 3fa8e6dc88e8041b6cb88d1b1e9c05676d3346b7 (diff) | |
parent | 29ccecd87709feda60d191f6aaba324ccad91f55 (diff) | |
download | blt-2aff4a96fa0286d875bddec0019648e2c6431cbc.zip blt-2aff4a96fa0286d875bddec0019648e2c6431cbc.tar.gz blt-2aff4a96fa0286d875bddec0019648e2c6431cbc.tar.bz2 |
Merge commit '29ccecd87709feda60d191f6aaba324ccad91f55' 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: |