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Client APIs and toolsYou can use the HCL Informix® implementation of client APIs to develop applications for Informix® database servers.
APIThe Informix® GLS API Programmer's Guide describes the global language support (GLS) application programming interface (API) available in Informix® ESQL/C and HCL Informix® DataBlade® modules.
Character processingThese topics describe the character-processing capabilities of the library.
String operationsThe library supports string traversal and string processing operations on multibyte-character and wide-character strings.
String processingThe library provides functions for concatenation, string copying, string-length determination, and character searching. The library provides both multibyte and wide-character functions for these string-processing tasks.
String-length determination

String-length determination

The following table lists the multibyte functions and their wide-character equivalents that determine string length or number of characters.


String-length task	Multibyte-character function	Wide-character function
Determine the number of characters in the string, not including any terminating null characters.	ifx_gl_mbslen()	ifx_gl_wcslen()
Determine the number of bytes in a multibyte string, not including any trailing space characters.	ifx_gl_mbsntsbytes()	None
Determine the number of characters in a string, not including the trailing space characters.	ifx_gl_mbsntslen()	ifx_gl_wcsntslen()
Determine the number of characters in the initial substring of one string that consists entirely of characters in a second specified character string.	ifx_gl_mbsspn()	ifx_gl_wcsspn()
Determine the number of characters in the initial substring of one string that consists entirely of characters not in a specified second character string.	ifx_gl_mbscspn()	ifx_gl_wcscspn()

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