Searched refs:in_range (Results 1 – 1 of 1) sorted by relevance
| /lk-master/external/lib/lwip/core/ipv4/ |
| A D | ip_addr.c | 114 #define in_range(c, lo, up) ((u8_t)c >= lo && (u8_t)c <= up) macro
115 #define isprint(c) in_range(c, 0x20, 0x7f)
116 #define isdigit(c) in_range(c, '0', '9')
117 #define isxdigit(c) (isdigit(c) || in_range(c, 'a', 'f') || in_range(c, 'A', 'F'))
118 #define islower(c) in_range(c, 'a', 'z')
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