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gbdk-2020

GameBoy Development Kit
download: https://git.y1.nz/archives/gbdk.tar.gz
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gbdk-lib/libc/isalpha.c

      1 #include <ctype.h>
      2 #include <stdbool.h>
      3 #include <stdint.h>
      4 
      5 bool isalpha(char c) {
      6     return ((((uint8_t)((uint8_t)c - 'a') < ('z' - 'a' + 1))) || ((uint8_t)((uint8_t)c - 'A') < ('Z' - 'A' + 1))) ? true : false;
      7 }

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