diff options
author | Jason McIntyre <jmc@cvs.openbsd.org> | 2008-06-04 17:14:08 +0000 |
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committer | Jason McIntyre <jmc@cvs.openbsd.org> | 2008-06-04 17:14:08 +0000 |
commit | 46d98c9b0f43e2aaa13b18387beac0a45a00172e (patch) | |
tree | 49ee0ad49dfed571bd22df8d2e2d7ebe0c72615b /usr.bin/awk/awk.1 | |
parent | 6915fc688854dec50e7717cc0db77d9ae49dc1e4 (diff) |
tweak previous, and arrange the text to read a little better;
Diffstat (limited to 'usr.bin/awk/awk.1')
-rw-r--r-- | usr.bin/awk/awk.1 | 39 |
1 files changed, 20 insertions, 19 deletions
diff --git a/usr.bin/awk/awk.1 b/usr.bin/awk/awk.1 index 1d6da9ab0fb..860070c909e 100644 --- a/usr.bin/awk/awk.1 +++ b/usr.bin/awk/awk.1 @@ -1,4 +1,4 @@ -.\" $OpenBSD: awk.1,v 1.29 2008/06/04 14:04:42 pyr Exp $ +.\" $OpenBSD: awk.1,v 1.30 2008/06/04 17:14:07 jmc Exp $ .\" EX/EE is a Bd .\" .\" Copyright (C) Lucent Technologies 1997 @@ -425,7 +425,18 @@ Separates multiple subscripts (default 034). .El .Sh FUNCTIONS The awk language has a variety of built-in functions: -arithmetic, string, input/output and general. +arithmetic, string, input/output, general, and bit-operation. +.Pp +Functions may be defined (at the position of a pattern-action statement) +thusly: +.Pp +.Dl function foo(a, b, c) { ...; return x } +.Pp +Parameters are passed by value if scalar, and by reference if array name; +functions may be called recursively. +Parameters are local to the function; all other variables are global. +Thus local variables may be created by providing excess parameters in +the function definition. .Ss Arithmetic Functions .Bl -tag -width "atan2(y, x)" .It Fn atan2 y x @@ -678,32 +689,21 @@ Executes .Fa cmd and returns its exit status. .El -.Ss Bit-Operation functions +.Ss Bit-Operation Functions .Bl -tag -width "lshift(a, b)" .It Fn compl x Returns the bitwise complement of integer argument x. .It Fn and x y -Performs a bitwise AND on integer arguments x and y +Performs a bitwise AND on integer arguments x and y. .It Fn or x y -Performs a bitwise OR on integer arguments x and y +Performs a bitwise OR on integer arguments x and y. .It Fn xor x y -Performs a bitwise Exclusive-OR on integer arguments x and y +Performs a bitwise Exclusive-OR on integer arguments x and y. .It Fn lshift x n Returns x shifted by n bits to the left. .It Fn rshift x n Returns y shifted by n bits to the right. .El -.Pp -Functions may be defined (at the position of a pattern-action statement) -thusly: -.Pp -.Dl function foo(a, b, c) { ...; return x } -.Pp -Parameters are passed by value if scalar, and by reference if array name; -functions may be called recursively. -Parameters are local to the function; all other variables are global. -Thus local variables may be created by providing excess parameters in -the function definition. .Sh EXAMPLES Print lines longer than 72 characters: .Pp @@ -770,8 +770,9 @@ The flags .Op Fl \&dV and .Op Fl safe , -as well as the command -.Cm fflush , compl , and , or , xor , lshift , rshift +as well as the commands +.Cm fflush , compl , and , or , +.Cm xor , lshift , rshift , are extensions to that specification. .Sh HISTORY An |