1 /* Copyright (C) 2007 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
3 /** \file portable_io.h Inline functions for binary IO. */
5 static inline uint64_t read_portable(unsigned bits, const void *buf)
8 int i, num_bytes = bits / 8;
9 const uint8_t *p = (typeof(p))buf;
11 for (i = 0; i < num_bytes; i++) {
12 unsigned char c = p[i];
13 ret += ((uint64_t)c << (8 * i));
18 static inline uint64_t read_portable_be(unsigned bits, const void *buf)
21 int i, num_bytes = bits / 8;
22 const uint8_t *p = (typeof(p))buf;
24 for (i = 0; i < num_bytes; i++) {
25 unsigned char c = p[i];
26 ret += ((uint64_t)c << (8 * (num_bytes - i - 1)));
31 static inline uint64_t read_u64(const void *buf)
33 return read_portable(64, buf);
36 static inline uint32_t read_u32(const void *buf)
38 return read_portable(32, buf);
41 static inline uint16_t read_u16(const void *buf)
43 return read_portable(16, buf);
46 static inline uint8_t read_u8(const void *buf)
48 return read_portable(8, buf);
51 static inline uint64_t read_u64_be(const void *buf)
53 return read_portable_be(64, buf);
56 static inline uint32_t read_u32_be(const void *buf)
58 return read_portable_be(32, buf);
61 static inline uint16_t read_u16_be(const void *buf)
63 return read_portable_be(16, buf);
66 static inline void write_portable(unsigned bits, char *buf, uint64_t val)
68 int i, num_bytes = bits / 8;
69 uint8_t *p = (typeof(p))buf;
71 for (i = 0; i < num_bytes; i++) {
77 static inline void write_portable_be(unsigned bits, char *buf, uint64_t val)
79 int i, num_bytes = bits / 8;
80 uint8_t *p = (typeof(p))buf;
82 for (i = 0; i < num_bytes; i++) {
83 p[num_bytes - i - 1] = val & 0xff;
88 static inline void write_u64(void *buf, uint64_t val)
90 write_portable(64, buf, val);
93 static inline void write_u32(void *buf, uint32_t val)
95 write_portable(32, buf, (uint64_t) val);
98 static inline void write_u16(void *buf, uint16_t val)
100 write_portable(16, buf, (uint64_t) val);
103 static inline void write_u8(void *buf, uint8_t val)
105 write_portable(8, buf, (uint64_t) val);
108 static inline void write_u64_be(void *buf, uint64_t val)
110 write_portable_be(64, buf, val);
113 static inline void write_u32_be(void *buf, uint32_t val)
115 write_portable_be(32, buf, (uint64_t) val);
118 static inline void write_u16_be(void *buf, uint16_t val)
120 write_portable_be(16, buf, (uint64_t) val);