05-23-2005
Conversion Problem
hi,
i am reading a string values from a file.the values are
2000
20000
300
10
5000
now retrieving each value one by one and printing if they are greater than 1000.
i use this statement for the same (in perl script)
if ($_ gt 1000){
print $_
}
but its now prininting all the values.
are the strings form files trated as characters?if so how can convert them to number?any type cast operator?or am i doin anything else wrong?
Thnaks and Regards
Vivek.S
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LEARN ABOUT NETBSD
xvgetportattribute
XvGetPortAttribute(3) libXv Functions XvGetPortAttribute(3)
NAME
XvGetPortAttribute - return current port attribute value
SYNOPSIS
#include <X11/extensions/Xvlib.h>
int XvGetPortAttribute(Display *dpy, XvPortID port,
Atom attribute, int p_value);
ARGUMENTS
dpy Specifies the connection to the X server.
port Specifies the port, associated with the given display, for which the attribute values are to be returned.
attribute An atom that identifies the attribute to be queried by this request. Control atoms are obtained using the XInternAtom request
with a string from the following table.
p_value Pointer to the location where the attribute value is written on return.
DESCRIPTION
XvGetPortAttribute(3) returns the current value of the requested port attribute in the integer pointed to by p_value. The attribute is
identified using an Atom that equates to the attribute name. The XInternAtom request can be used with one of the strings below to return a
matching Atom.
-----------------------------------------------------
Attribute String Type Default
-----------------------------------------------------
"XV_ENCODING" XvEncodingID Server dependent
"XV_HUE" [-1000...1000] 0
"XV_SATURATION" [-1000...1000] 0
"XV_BRIGHTNESS" [-1000...1000] 0
"XV_CONTRAST" [-1000...1000] 0
RETURN VALUES
[Success]
Returned if XvGetPortAttribute(3) completed successfully.
[XvBadExtension]
Returned if the Xv extension is unavailable.
[XvBadAlloc]
Returned if XvGetPortAttribute(3) failed to allocate memory to process the request.
DIAGNOSTICS
[XvBadPort]
Generated if the requested port does not exist.
[BadMatch]
Generated if the requested attribute atom does not specify an attribute supported by the adaptor.
SEE ALSO
XvSetPortAttribute(3), XvPortNotify(3)
X Version 11 libXv 1.0.7 XvGetPortAttribute(3)