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Full Discussion: Representing INFINITY in C language????
Top Forums Programming Representing INFINITY in C language???? Post 302599792 by jim mcnamara on Saturday 18th of February 2012 11:30:04 AM
Old 02-18-2012
There is no representation of infinity in C. jlliagre pointed out the max value for signed integers. There ones for unsigned long int, double, float, etc.

Consider reading the limits.h file in your /usr/include directory. This is where constants are defined, like LONG_MAX, and they work whether you compile either 64 code or 32 bit code, the values simply are declared much larger for 64 bit code.

You should learn about them and use them in your coding.

ps: look into qsort() for sorting.
 

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LEARN ABOUT CENTOS

crypt_unix

crypt_unix(5)						Standards, Environments, and Macros					     crypt_unix(5)

NAME

       crypt_unix - traditional UNIX crypt algorithm

DESCRIPTION

       The  crypt_unix algorithm is the traditional UNIX crypt algorithm. It is not considered sufficiently secure for current systems and is pro-
       vided for backwards compatibility. The crypt_sunmd5(5), crypt_bsdmd5(5), or crypt_bsdbf(5) algorithm should be used instead.

       The algorithm identifier for policy.conf(4) is __unix__. There is no entry in crypt.conf(4) for this algorithm.

       The crypt_unix algorithm is internal to libc and provides the string encoding function used by crypt(3C) when the first	character  of  the
       salt is not a "$".

       This algorithm is based on a one-way encryption algorithm with variations intended (among other things) to frustrate use of hardware imple-
       mentations of a key search.  Only the first eight characters of the key passed to crypt() are  used  with  this	algorithm;  the  rest  are
       silently  ignored.  The salt is a two-character string chosen from the set [a-zA-Z0-9./].  This string is used to perturb the hashing algo-
       rithm in one of 4096 different ways.

       The maximum password length for crypt_unix is 8 characters.

USAGE

       The return value of the crypt_unix algorithm might not be portable among standard-conforming systems. See standards(5).

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       passwd(1), crypt(3C), crypt_genhash_impl(3C), crypt_gensalt(3C), crypt_gensalt_impl(3C), getpassphrase(3C), crypt.conf(4), passwd(4),  pol-
       icy.conf(4), attributes(5), crypt_bsdbf(5), crypt_bsdmd5(5), crypt_sunmd5(5), standards(5)

SunOS 5.10							    6 Aug 2003							     crypt_unix(5)
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