Endianness module.

[ccan] / ccan / endian / test / run.c

diff --git a/ccan/endian/test/run.c b/ccan/endian/test/run.c
new file mode 100644 (file)
index 0000000..9016e22
--- /dev/null
+++ b/ccan/endian/test/run.c
@@ -0,0 +1,106 @@
+#include <stdlib.h>
+#include <stddef.h>
+#include <tap/tap.h>
+#include "endian/endian.h"
+
+int main(int argc, char *argv[])
+{
+       union {
+               uint64_t u64;
+               unsigned char u64_bytes[8];
+       } u64;
+       union {
+               uint32_t u32;
+               unsigned char u32_bytes[4];
+       } u32;
+       union {
+               uint16_t u16;
+               unsigned char u16_bytes[2];
+       } u16;
+
+       plan_tests(48);
+
+       /* Straight swap tests. */
+       u64.u64_bytes[0] = 0x00;
+       u64.u64_bytes[1] = 0x11;
+       u64.u64_bytes[2] = 0x22;
+       u64.u64_bytes[3] = 0x33;
+       u64.u64_bytes[4] = 0x44;
+       u64.u64_bytes[5] = 0x55;
+       u64.u64_bytes[6] = 0x66;
+       u64.u64_bytes[7] = 0x77;
+       u64.u64 = swab_u64(u64.u64);
+       ok1(u64.u64_bytes[7] == 0x00);
+       ok1(u64.u64_bytes[6] == 0x11);
+       ok1(u64.u64_bytes[5] == 0x22);
+       ok1(u64.u64_bytes[4] == 0x33);
+       ok1(u64.u64_bytes[3] == 0x44);
+       ok1(u64.u64_bytes[2] == 0x55);
+       ok1(u64.u64_bytes[1] == 0x66);
+       ok1(u64.u64_bytes[0] == 0x77);
+
+       u32.u32_bytes[0] = 0x00;
+       u32.u32_bytes[1] = 0x11;
+       u32.u32_bytes[2] = 0x22;
+       u32.u32_bytes[3] = 0x33;
+       u32.u32 = swab_u32(u32.u32);
+       ok1(u32.u32_bytes[3] == 0x00);
+       ok1(u32.u32_bytes[2] == 0x11);
+       ok1(u32.u32_bytes[1] == 0x22);
+       ok1(u32.u32_bytes[0] == 0x33);
+
+       u16.u16_bytes[0] = 0x00;
+       u16.u16_bytes[1] = 0x11;
+       u16.u16 = swab_u16(u16.u16);
+       ok1(u16.u16_bytes[1] == 0x00);
+       ok1(u16.u16_bytes[0] == 0x11);
+
+       /* Endian tests. */
+       u64.u64 = cpu_to_le64(0x0011223344556677ULL);
+       ok1(u64.u64_bytes[0] == 0x77);
+       ok1(u64.u64_bytes[1] == 0x66);
+       ok1(u64.u64_bytes[2] == 0x55);
+       ok1(u64.u64_bytes[3] == 0x44);
+       ok1(u64.u64_bytes[4] == 0x33);
+       ok1(u64.u64_bytes[5] == 0x22);
+       ok1(u64.u64_bytes[6] == 0x11);
+       ok1(u64.u64_bytes[7] == 0x00);
+       ok1(le64_to_cpu(u64.u64) == 0x0011223344556677ULL);
+
+       u64.u64 = cpu_to_be64(0x0011223344556677ULL);
+       ok1(u64.u64_bytes[7] == 0x77);
+       ok1(u64.u64_bytes[6] == 0x66);
+       ok1(u64.u64_bytes[5] == 0x55);
+       ok1(u64.u64_bytes[4] == 0x44);
+       ok1(u64.u64_bytes[3] == 0x33);
+       ok1(u64.u64_bytes[2] == 0x22);
+       ok1(u64.u64_bytes[1] == 0x11);
+       ok1(u64.u64_bytes[0] == 0x00);
+       ok1(be64_to_cpu(u64.u64) == 0x0011223344556677ULL);
+
+       u32.u32 = cpu_to_le32(0x00112233);
+       ok1(u32.u32_bytes[0] == 0x33);
+       ok1(u32.u32_bytes[1] == 0x22);
+       ok1(u32.u32_bytes[2] == 0x11);
+       ok1(u32.u32_bytes[3] == 0x00);
+       ok1(le32_to_cpu(u32.u32) == 0x00112233);
+
+       u32.u32 = cpu_to_be32(0x00112233);
+       ok1(u32.u32_bytes[3] == 0x33);
+       ok1(u32.u32_bytes[2] == 0x22);
+       ok1(u32.u32_bytes[1] == 0x11);
+       ok1(u32.u32_bytes[0] == 0x00);
+       ok1(be32_to_cpu(u32.u32) == 0x00112233);
+
+       u16.u16 = cpu_to_le16(0x0011);
+       ok1(u16.u16_bytes[0] == 0x11);
+       ok1(u16.u16_bytes[1] == 0x00);
+       ok1(le16_to_cpu(u16.u16) == 0x0011);
+
+       u16.u16 = cpu_to_be16(0x0011);
+       ok1(u16.u16_bytes[1] == 0x11);
+       ok1(u16.u16_bytes[0] == 0x00);
+       ok1(be16_to_cpu(u16.u16) == 0x0011);
+
+       exit(exit_status());
+}