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0 Command: strcasecmp | Section: 3 | Source: Digital UNIX | File: strcasecmp.3.gz
strcasecmp(3) Library Functions Manual strcasecmp(3) NAME strcasecmp, strncasecmp - Perform case-insensitive string comparisons LIBRARY Standard C Library (libc.so, libc.a) SYNOPSIS #include <strings.h> int strcasecmp( const char *s1, const char *s2 int strncasecmp( const char *s1, const char *s2 size_t n; STANDARDS Interfaces documented on this reference page conform to industry stan- dards as follows: strcasecmp(), strncasecmp(): XPG4-UNIX Refer to the standards(5) reference page for more information about in- dustry standards and associated tags. PARAMETERS Points to a location containing first string. Points to a location containing the second of two strings referenced. Specifies the maximum number of bytes to compare. DESCRIPTION The strcasecmp() function compares the string pointed to by the s1 pa- rameter to the string pointed to by the s2 parameter, while ignoring differences in case. The strncasecmp() function is similar to the str- casecmp function, but also compares size. If the size specified by n is reached before a null, the comparison stops. Note that these func- tions work for 7-bit ASCII compares only and should not be used in in- ternationalized applications. RETURN VALUES Upon completion, the strcasecmp() function returns an integer whose value is greater than, equal to, or less than 0 (zero), according to whether the s1 string, ignoring case, is greater than, equal to, or less than the s2 string. Upon successful completion, the strncasecmp() function returns an inte- ger whose value is greater than, equal to, or less than 0 (zero), ac- cording to whether the s1 array (possibly null-terminated), ignoring case, is greater than, equal to, or less than the s2 string (possibly null-terminated). RELATED INFORMATION Functions: string(3), strcat(3), strcmp(3), strcpy(3) Standards: standards(5) delim off strcasecmp(3)

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