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       strncmp.3 (840B)
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            1 .TH strncmp 3
            2 .SH NAME
            3 strncmp - compare part of two strings
            4 .SH SYNOPSIS
            5 #include <string.h>
            6 
            7 int strncmp(const char *s1, const char *s2, size_t n)
            8 .SH DESCRIPTION
            9 The
           10 .BR strncmp ()
           11 function compares not more than
           12 .I n
           13 characters
           14 (characters that follow a null character are not compared)
           15 from the array pointed to by
           16 .I s1
           17 to the array pointed to by
           18 .IR s2 .
           19 .PP
           20 The value returned shall be used to determine
           21 if a string is lexicographically
           22 greater than, lesser than or equal to
           23 the other string.
           24 .SH RETURN VALUE
           25 The
           26 .BR strncmp ()
           27 function shall return an integer greater than,
           28 equal to, or lesser than 0,
           29 if the string pointed to by
           30 .I s1
           31 is greater than,
           32 equal to, or lesser than the string pointed to by
           33 .IR s2 ,
           34 respectively.
           35 .PP
           36 The function shall return 0 if
           37 .I n
           38 is equal to 0.
           39 .SH STANDARDS
           40 ISO/IEC 9899:1999 Section 7.21.4.4