ASCII_IS_UPPER() / ASCII_IsUpper()

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

Determines whether a character is an uppercase alphabetic character.

Files

lib_ascii.h/lib_ascii.c

Prototypes

          ASCII_IS_UPPER(ch);
           
          CPU_BOOLEAN  ASCII_IsUpper (CPU_CHAR  ch);

Arguments

ch

Character to examine.

Returned Value

DEF_YES,

if character is an uppercase alphabetic character;

DEF_NO,

if character is not an uppercase alphabetic character.

Required Configuration

None.

Notes / Warnings

ISO/IEC 9899:TC2, Section 7.4.1.11.(2) states that “isupper() returns true only for the uppercase letters”.

Example Usage

          CPU_CHAR     ch;
          CPU_BOOLEAN  upper;


          ch    = ASCII_CHAR_LATIN_UPPER_G;
          upper = ASCII_IS_UPPER(ch);