ASCII_IS_LOWER() / ASCII_IsLower()

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Last updated: Dec 03, 2020 by WES Admin
1 min read

Determines whether a character is a lowercase alphabetic character.

Files

lib_ascii.h/lib_ascii.c

Prototypes

          ASCII_IS_LOWER(ch);
           
          CPU_BOOLEAN  ASCII_IsLower (CPU_CHAR  ch);

Arguments

ch

Character to examine.

Returned Value

DEF_YES,

if character is a lowercase alphabetic character;

DEF_NO,

if character is not a lowercase alphabetic character.

Required Configuration

None.

Notes / Warnings

ISO/IEC 9899:TC2, Section 7.4.1.7.(2) states that “islower() returns true only for the lowercase letters”.

Example Usage

          CPU_CHAR     ch;
          CPU_BOOLEAN  lower;


          ch    = ASCII_CHAR_LATIN_LOWER_G;
          lower = ASCII_IS_LOWER(ch);