The ifx_gl_ismlower() function

The ifx_gl_ismlower() function determines whether a multibyte character contains a lowercase alphabetic character.

Syntax

#include <ifxgls.h>
...
int ifx_gl_ismlower(mb, mb_byte_limit)
       gl_mchar_t *mb;
       int mb_byte_limit;

mb: A pointer to the multibyte character whose character classification you want to determine.
mb_byte_limit: The integer number of bytes to read from mb to try to form a complete multibyte character. If mb_byte_limit is IFX_GL_NO_LIMIT, the ifx_gl_ismlower() function reads as many bytes as necessary from mb to form a complete character.

Valid in client application	Valid in DataBlade UDR
Yes	Yes

Usage

The ifx_gl_ismlower() function tests whether mb is in the lower character class according to the rules of the current locale. The lower character class contains:

the ASCII characters a through z.
all other single-byte and multibyte lowercase characters for Latin-based languages; for example ∾, ç, é, and ü.

Characters in this class are also in the alpha, graph, and print classes. No characters in the upper, digit, blank, space, punct, or cntrl classes are in this class.

To determine the uppercase equivalent of an alphabetic multibyte character, you can use the ifx_gl_tomupper() function. Use the ifx_gl_ismalpha() function to test whether a multibyte character is an alphabetic character (uppercase or lowercase).

Locale information

The LC_CTYPE category of the current locale affects the behavior of this function because it defines the lower character class.

Return values

>0: The *mb character is in the lower character class.
0: The function was not successful, and the error number is set to indicate the cause. See the Errors section.

Errors

This function does not return a unique value to indicate an error. If an error occurred, the function returns 0 and sets the ifx_gl_lc_errno() error number to one of the following values.

IFX_GL_EILSEQ: The *mb value is not a valid multibyte character.
IFX_GL_EINVAL: The function cannot determine whether mb is a valid multibyte character because it would need to read more than mb_byte_limit bytes from mb. If mb_byte_limit is less than or equal to 0, this function always returns this error.