chiark / gitweb /
shared: unaligned - use void* instead of unaligned be16_t*
authorTom Gundersen <teg@jklm.no>
Tue, 4 Nov 2014 18:52:04 +0000 (19:52 +0100)
committerTom Gundersen <teg@jklm.no>
Wed, 5 Nov 2014 15:54:22 +0000 (16:54 +0100)
src/shared/unaligned.h
src/test/test-unaligned.c

index b194d71..d6181dd 100644 (file)
 
 #include <stdint.h>
 
-#include "sparse-endian.h"
+static inline uint16_t unaligned_read_be16(const void *_u) {
+        const uint8_t *u = _u;
 
-static inline uint16_t unaligned_read_be16(const be16_t *u) {
-        return (((uint16_t) ((uint8_t*) u)[0]) << 8) |
-                ((uint16_t) ((uint8_t*) u)[1]);
+        return (((uint16_t) u[0]) << 8) |
+                ((uint16_t) u[1]);
 }
 
-static inline uint32_t unaligned_read_be32(const be32_t *u) {
-        return (((uint32_t) unaligned_read_be16((be16_t*) u)) << 16) |
-                ((uint32_t) unaligned_read_be16((be16_t*) u + 1));
+static inline uint32_t unaligned_read_be32(const void *_u) {
+        const uint8_t *u = _u;
+
+        return (((uint32_t) unaligned_read_be16(u)) << 16) |
+                ((uint32_t) unaligned_read_be16(u + 2));
 }
 
-static inline uint64_t unaligned_read_be64(const be64_t *u) {
-        return (((uint64_t) unaligned_read_be32((be32_t*) u)) << 32) |
-                ((uint64_t) unaligned_read_be32((be32_t*) u + 1));
+static inline uint64_t unaligned_read_be64(const void *_u) {
+        const uint8_t *u = _u;
+
+        return (((uint64_t) unaligned_read_be32(u)) << 32) |
+                ((uint64_t) unaligned_read_be32(u + 4));
 }
 
-static inline void unaligned_write_be16(be16_t *u, uint16_t a) {
-        ((uint8_t*) u)[0] = (uint8_t) (a >> 8);
-        ((uint8_t*) u)[1] = (uint8_t) a;
+static inline void unaligned_write_be16(void *_u, uint16_t a) {
+        uint8_t *u = _u;
+
+        u[0] = (uint8_t) (a >> 8);
+        u[1] = (uint8_t) a;
 }
 
-static inline void unaligned_write_be32(be32_t *u, uint32_t a) {
-        unaligned_write_be16((be16_t*) u, (uint16_t) (a >> 16));
-        unaligned_write_be16((be16_t*) u + 1, (uint16_t) a);
+static inline void unaligned_write_be32(void *_u, uint32_t a) {
+        uint8_t *u = _u;
+
+        unaligned_write_be16(u, (uint16_t) (a >> 16));
+        unaligned_write_be16(u + 2, (uint16_t) a);
 }
 
-static inline void unaligned_write_be64(be64_t *u, uint64_t a) {
-        unaligned_write_be32((be32_t*) u, (uint32_t) (a >> 32));
-        unaligned_write_be32((be32_t*) u + 1, (uint32_t) a);
+static inline void unaligned_write_be64(void *_u, uint64_t a) {
+        uint8_t *u = _u;
+
+        unaligned_write_be32(u, (uint32_t) (a >> 32));
+        unaligned_write_be32(u + 4, (uint32_t) a);
 }
index 52693cd..1754d06 100644 (file)
@@ -18,6 +18,7 @@
 ***/
 
 #include "unaligned.h"
+#include "sparse-endian.h"
 #include "util.h"
 
 static uint8_t data[] = {
@@ -28,65 +29,65 @@ static uint8_t data[] = {
 int main(int argc, const char *argv[]) {
         uint8_t scratch[16];
 
-        assert_se(unaligned_read_be16((be16_t*)&data[0]) == 0x0001);
-        assert_se(unaligned_read_be16((be16_t*)&data[1]) == 0x0102);
+        assert_se(unaligned_read_be16(&data[0]) == 0x0001);
+        assert_se(unaligned_read_be16(&data[1]) == 0x0102);
 
-        assert_se(unaligned_read_be32((be32_t*)&data[0]) == 0x00010203);
-        assert_se(unaligned_read_be32((be32_t*)&data[1]) == 0x01020304);
-        assert_se(unaligned_read_be32((be32_t*)&data[2]) == 0x02030405);
-        assert_se(unaligned_read_be32((be32_t*)&data[3]) == 0x03040506);
+        assert_se(unaligned_read_be32(&data[0]) == 0x00010203);
+        assert_se(unaligned_read_be32(&data[1]) == 0x01020304);
+        assert_se(unaligned_read_be32(&data[2]) == 0x02030405);
+        assert_se(unaligned_read_be32(&data[3]) == 0x03040506);
 
-        assert_se(unaligned_read_be64((be64_t*)&data[0]) == 0x0001020304050607);
-        assert_se(unaligned_read_be64((be64_t*)&data[1]) == 0x0102030405060708);
-        assert_se(unaligned_read_be64((be64_t*)&data[2]) == 0x0203040506070809);
-        assert_se(unaligned_read_be64((be64_t*)&data[3]) == 0x030405060708090a);
-        assert_se(unaligned_read_be64((be64_t*)&data[4]) == 0x0405060708090a0b);
-        assert_se(unaligned_read_be64((be64_t*)&data[5]) == 0x05060708090a0b0c);
-        assert_se(unaligned_read_be64((be64_t*)&data[6]) == 0x060708090a0b0c0d);
-        assert_se(unaligned_read_be64((be64_t*)&data[7]) == 0x0708090a0b0c0d0e);
+        assert_se(unaligned_read_be64(&data[0]) == 0x0001020304050607);
+        assert_se(unaligned_read_be64(&data[1]) == 0x0102030405060708);
+        assert_se(unaligned_read_be64(&data[2]) == 0x0203040506070809);
+        assert_se(unaligned_read_be64(&data[3]) == 0x030405060708090a);
+        assert_se(unaligned_read_be64(&data[4]) == 0x0405060708090a0b);
+        assert_se(unaligned_read_be64(&data[5]) == 0x05060708090a0b0c);
+        assert_se(unaligned_read_be64(&data[6]) == 0x060708090a0b0c0d);
+        assert_se(unaligned_read_be64(&data[7]) == 0x0708090a0b0c0d0e);
 
         zero(scratch);
-        unaligned_write_be16((uint16_t*)&scratch[0], 0x0001);
+        unaligned_write_be16(&scratch[0], 0x0001);
         assert_se(memcmp(&scratch[0], &data[0], sizeof(uint16_t)) == 0);
         zero(scratch);
-        unaligned_write_be16((uint16_t*)&scratch[1], 0x0102);
+        unaligned_write_be16(&scratch[1], 0x0102);
         assert_se(memcmp(&scratch[1], &data[1], sizeof(uint16_t)) == 0);
 
         zero(scratch);
-        unaligned_write_be32((be32_t*)&scratch[0], 0x00010203);
+        unaligned_write_be32(&scratch[0], 0x00010203);
         assert_se(memcmp(&scratch[0], &data[0], sizeof(uint32_t)) == 0);
         zero(scratch);
-        unaligned_write_be32((be32_t*)&scratch[1], 0x01020304);
+        unaligned_write_be32(&scratch[1], 0x01020304);
         assert_se(memcmp(&scratch[1], &data[1], sizeof(uint32_t)) == 0);
         zero(scratch);
-        unaligned_write_be32((be32_t*)&scratch[2], 0x02030405);
+        unaligned_write_be32(&scratch[2], 0x02030405);
         assert_se(memcmp(&scratch[2], &data[2], sizeof(uint32_t)) == 0);
         zero(scratch);
-        unaligned_write_be32((be32_t*)&scratch[3], 0x03040506);
+        unaligned_write_be32(&scratch[3], 0x03040506);
         assert_se(memcmp(&scratch[3], &data[3], sizeof(uint32_t)) == 0);
 
         zero(scratch);
-        unaligned_write_be64((be64_t*)&scratch[0], 0x0001020304050607);
+        unaligned_write_be64(&scratch[0], 0x0001020304050607);
         assert_se(memcmp(&scratch[0], &data[0], sizeof(uint64_t)) == 0);
         zero(scratch);
-        unaligned_write_be64((be64_t*)&scratch[1], 0x0102030405060708);
+        unaligned_write_be64(&scratch[1], 0x0102030405060708);
         assert_se(memcmp(&scratch[1], &data[1], sizeof(uint64_t)) == 0);
         zero(scratch);
-        unaligned_write_be64((be64_t*)&scratch[2], 0x0203040506070809);
+        unaligned_write_be64(&scratch[2], 0x0203040506070809);
         assert_se(memcmp(&scratch[2], &data[2], sizeof(uint64_t)) == 0);
         zero(scratch);
-        unaligned_write_be64((be64_t*)&scratch[3], 0x030405060708090a);
+        unaligned_write_be64(&scratch[3], 0x030405060708090a);
         assert_se(memcmp(&scratch[3], &data[3], sizeof(uint64_t)) == 0);
         zero(scratch);
-        unaligned_write_be64((be64_t*)&scratch[4], 0x0405060708090a0b);
+        unaligned_write_be64(&scratch[4], 0x0405060708090a0b);
         assert_se(memcmp(&scratch[4], &data[4], sizeof(uint64_t)) == 0);
         zero(scratch);
-        unaligned_write_be64((be64_t*)&scratch[5], 0x05060708090a0b0c);
+        unaligned_write_be64(&scratch[5], 0x05060708090a0b0c);
         assert_se(memcmp(&scratch[5], &data[5], sizeof(uint64_t)) == 0);
         zero(scratch);
-        unaligned_write_be64((be64_t*)&scratch[6], 0x060708090a0b0c0d);
+        unaligned_write_be64(&scratch[6], 0x060708090a0b0c0d);
         assert_se(memcmp(&scratch[6], &data[6], sizeof(uint64_t)) == 0);
         zero(scratch);
-        unaligned_write_be64((be64_t*)&scratch[7], 0x0708090a0b0c0d0e);
+        unaligned_write_be64(&scratch[7], 0x0708090a0b0c0d0e);
         assert_se(memcmp(&scratch[7], &data[7], sizeof(uint64_t)) == 0);
 }