strncmp.c

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/***************************************************************************//**
 @file strncmp.c
 
 @brief Defines the strncmp function
*******************************************************************************/
#include <string.h>
 
/*******************************************************************************
 strncmp
*//**
 @brief Compares the strings pointed to be s1 and s2
 @param *s1 The first string to be compared
 @param *s2 The second string to be compared
 @param n Maximum number of characters to be compared
 
 The strncmp function compares note more than n characters (characters that
 follow a null character are not compared) from the array pointed to by s1 to
 the array pointed to by s2.
 
 @return Integer indicating if s1 is greater than, equal to, or less than s2
 @retval >0 s1 is greater than s2 or no comparison could be made
 @retval 0 s1 is equal to s2
 @retval <0 s1 is less than s2
*******************************************************************************/
int
strncmp(const char *s1, const char *s2, size_t n)
{
 size_t len1 = strlen(s1) + 1;
 
 if (len1 < n)
 {
 n = len1;
 }
 
 return memcmp(s1, s2, n);
}