Embedded Artistry libc
C Standard Library Support for Bare-metal Systems
isdigit.c
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1 // Pulled from musl libc, locale support removed
2 
3 #include <ctype.h>
4 
5 int isdigit(int c)
6 {
7  return (unsigned)c - '0' < 10;
8 }
isdigit
int isdigit(int c)
Checks if the given character is a numeric character.
Definition: isdigit.c:5