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int __isxdigit_ascii ( int ch );
int __isxdigit_ascii ( int ch )
{
return (unsigned int)( ch - '0') < 10u ||
(unsigned int)((ch | 0x20) - 'a') < 6u;
}
int isxdigit ( int ch ) __attribute__((weak,alias("__isxdigit_ascii")));
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