ASCII_IS_DIG() / ASCII_IsDig()

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

Determines whether a character is a decimal-digit character.

Files

lib_ascii.h/lib_ascii.c

Prototypes

          ASCII_IS_DIG(ch);
           
          CPU_BOOLEAN  ASCII_IsDig (CPU_CHAR  ch);

Arguments

ch

Character to examine.

Returned Value

DEF_YES,

if character is a decimal-digit character;

DEF_NO,

if character is not a decimal-digit character.

Required Configuration

None.

Notes / Warnings

ISO/IEC 9899:TC2, Section 7.4.1.5.(2) states that “isdigit() … tests for any decimal-digit character”.

Example Usage

          CPU_CHAR     ch;
          CPU_BOOLEAN  dig;


          ch  = ASCII_CHAR_DIGIT_SEVEN;
          dig = ASCII_IS_DIG(ch);