09-18-2008
int *ptr + max possible value
From reading my C book, Im aware that the integers have a maximum value which depends on what type of processor you are using (since they use 16-bit or 32-bit instructions).
Now I know pointers are very flexible, since they can reference anything, but in the case of integer pointers, can they reference an int value beyond the max. value of 4,294,967,295 (Im considering unsigned int * in a 32-bit environment) ?
Reason Im asking is because Im designing a program which reports on my company's disk usage (where some of our files are in the gigabyte and terabyte range)
many thanks
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htonl(3) Library Functions Manual htonl(3)
NAME
htonl - Converts an unsigned 32-bit integer from host byte order to Internet network-byte order
LIBRARY
Standard C Library (libc.so, libc.a)
SYNOPSIS
#include <arpa/inet.h> in_addr_t htonl ( in_addr_t hostint) ;
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:
htonl(): XNS4.0
Refer to the standards(5) reference page for more information about industry standards and associated tags.
PARAMETERS
Specifies a 32-bit integer in host byte order.
DESCRIPTION
The htonl() (host-to-network long) function converts an unsigned 32-bit integer from host byte order to Internet network-byte order.
The Internet network requires address and port reference data in network-byte order. Use the htonl() function to convert address and port
integers from Internet host byte order to Internet network-byte ordered integers.
RETURN VALUES
Upon successful completion, the htonl() function returns a 32-bit integer in Internet network-byte order.
ERRORS
Current industry standards do not define error values for the htonl() function.
RELATED INFORMATION
Functions: endhostent(3), endservent(3), htons(3), ntohl(3), ntohs(3)
Standards: standards(5)
Network Programmer's Guide delim off
htonl(3)