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Full Discussion: Nawk special numbers
Top Forums Shell Programming and Scripting Nawk special numbers Post 302942437 by Scrutinizer on Tuesday 28th of April 2015 04:34:27 PM
Old 04-28-2015
And:
Code:
$ echo info | gawk --posix '{print $1+0}'
inf
$ echo nano | gawk --posix '{print $1+0}'
nan
$ echo info | gawk --posix '{print $1-$1}'
nan

Code:
$ echo info | gawk '{print $1+0}'
0
$ echo nano | gawk '{print $1+0}'
0
$ echo info | gawk '{print $1-$1}'
0


--
Alas, /usr/xpg4/bin/awk on Solaris:
Code:
$ echo info | /usr/xpg4/bin/awk '{print $1+0}'
0
$ echo nano | /usr/xpg4/bin/awk '{print $1+0}'
0
$ echo info | /usr/xpg4/bin/awk '{print $1-$1}'
0

--
mawk:
Code:
$ echo info | mawk '{print $1+0}'
inf
$ echo nano | mawk '{print $1+0}'
nan
$ echo info | mawk '{print $1-$1}'
nan

Last edited by Scrutinizer; 04-28-2015 at 05:46 PM..
These 2 Users Gave Thanks to Scrutinizer For This Post:
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LEARN ABOUT OPENSOLARIS

echo

echo(3XCURSES)						  X/Open Curses Library Functions					    echo(3XCURSES)

NAME

       echo, noecho - enable/disable terminal echo

SYNOPSIS

       cc [ flag... ] file... -I /usr/xpg4/include  -L	/usr/xpg4/lib 
	-R  /usr/xpg4/lib  -lcurses  [ library... ]

       c89 [ flag... ] file... -lcurses [ library... ]

       #include <curses.h>

       int echo(void);

       int noecho(void);

DESCRIPTION

       The  echo()  function enables Echo mode for the current screen. The noecho() function disables Echo mode for the current screen. Initially,
       curses software echo mode is enabled and hardware echo mode of the tty driver is disabled. The echo() and noecho() functions control  soft-
       ware echo only. Hardware echo must remain disabled for the duration of the application, else the behavior is undefined.

RETURN VALUES

       Upon successful completion, these functions return OK. Otherwise, they return ERR.

ERRORS

       No errors are defined.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       getch(3XCURSES), getstr(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), scanw(3XCURSES), attributes(5), standards(5)

SunOS 5.11							    5 Jun 2002							    echo(3XCURSES)
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