ACPI_IS_ALPHA     200 include/acpi/acutils.h #define ACPI_IS_ALPHA(c)  (_acpi_ctype[(unsigned char)(c)] & (_ACPI_LO | _ACPI_UP))
ACPI_IS_ALPHA     250 include/acpi/platform/acenv.h #define ACPI_IS_ALPHA(i)        isalpha((int) (i))