diff options
Diffstat (limited to 'usr.bin/bc/bc.1')
| -rw-r--r-- | usr.bin/bc/bc.1 | 72 |
1 files changed, 62 insertions, 10 deletions
diff --git a/usr.bin/bc/bc.1 b/usr.bin/bc/bc.1 index 470a45826bc..d9961b6641f 100644 --- a/usr.bin/bc/bc.1 +++ b/usr.bin/bc/bc.1 @@ -1,4 +1,4 @@ -.\" $OpenBSD: bc.1,v 1.10 2003/11/09 19:27:27 otto Exp $ +.\" $OpenBSD: bc.1,v 1.11 2003/11/11 09:16:53 otto Exp $ .\" .\" Copyright (C) Caldera International Inc. 2001-2002. .\" All rights reserved. @@ -104,6 +104,10 @@ scale ( E ) number of digits right of decimal point L ( E , ... , E ) .Ed .Pp +The sequence +.Sq \e<newline><whitespace> +is ignored within numbers. +.Pp Operators .Bd -unfilled -offset indent -compact + \- * / % ^ (`%' is remainder; `^' is power) @@ -125,14 +129,42 @@ break continue quit a string of characters, enclosed in double quotes +print E ,..., E .Ed .Pp +A string may contain any character, except double quote. The if statement with an else branch is a non-portable extension. All three E's in a for statement may be empty. This is a non-portable extension. -The continue statement is also a non-portable extension. +The continue and print statements are also non-portable extensions. +.Pp +The print statement takes a list of comma-separated expressions. +Each expression in the list is evaluated and the computed +value is printed and assigned to the variable `last'. +No trailing newline is printed. +The expression may also be a string enclosed in double quotes. +Within these strings the following escape sequences may be used: +.Sq \ea +for bell (alert), +.Sq \eb +for backspace, +.Sq \ef +for formfeed, +.Sq \en +for newline, +.Sq \er +for carriage return, +.Sq \et +for tab, +.Sq \eq +for double quote and +.Sq \e\e +for backslash. +Any other character following a backslash will be ignored. +Strings will not be assigned to `last'. .Pp Function definitions +.Pp .Bd -unfilled -offset indent -compact define L ( L ,..., L ) { auto L, ... , L @@ -141,14 +173,10 @@ define L ( L ,..., L ) { } .Ed .Pp -The sequence -.Sq \e\<newline><whitespace> -is ignored within numbers. -A string may contain any character, except double quote. +Functions available in the math library, which is loaded by specifying the +.Fl l +flag on the command line .Pp -Functions in -.Fl lm -math library .Bl -tag -width j(n,x) -offset indent -compact .It s(x) sine @@ -216,9 +244,18 @@ the exponential function and .Pp prints approximate values of the exponential function of the first ten integers. +.Sh FILES +.Bl -tag -width /usr/share/misc/bc.library -compact +.It Pa /usr/share/misc/bc.library +math library, read when the +.Fl l +option is specified on the command line. +.El .Sh SEE ALSO .Xr dc 1 .Rs +.%B USD +.%V 06 .%A L. L. Cherry .%A R. Morris .%T "BC \- An arbitrary precision desk-calculator language" @@ -232,8 +269,23 @@ specification. .Sh HISTORY The .Nm -command appeared in +first command appeared in .At v6 . +A complete rewrite of the +.Nm +command first appeared in +.Ox 3.5 . +.Sh AUTHORS +The original version of the +.Nm +command was written by +.An Robert Morris +and +.An Lorinda Cherry . +The current version of the +.Nm +utility was written by +.An Otto Moerbeek . .Sh BUGS No .Sq && , |