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sd128: add format string macros for outputting sd_id128_t variables

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This commit is contained in:
Lennart Poettering 2012-01-04 02:09:05 +01:00
parent bad75c274a
commit eaff7bd849
2 changed files with 9 additions and 0 deletions
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7
src/sd-id128.h
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@ -49,6 +49,13 @@ int sd_id128_get_boot(sd_id128_t *ret);
((sd_id128_t) { .bytes = { 0x##v0, 0x##v1, 0x##v2, 0x##v3, 0x##v4, 0x##v5, 0x##v6, 0x##v7, \
0x##v8, 0x##v9, 0x##v10, 0x##v11, 0x##v12, 0x##v13, 0x##v14, 0x##v15 }})
/* Note that SD_FORMAT_ID128_VAL will evaluate the passed argument 16
* times. It is hence not a good idea to call this macro with an
* expensive function as paramater or an expression with side
* effects */
#define SD_FORMAT_ID128_STR "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"
#define SD_FORMAT_ID128_VAL(x) (x).bytes[0], (x).bytes[1], (x).bytes[2], (x).bytes[3], (x).bytes[4], (x).bytes[5], (x).bytes[6], (x).bytes[7], (x).bytes[8], (x).bytes[9], (x).bytes[10], (x).bytes[11], (x).bytes[12], (x).bytes[13], (x).bytes[14], (x).bytes[15]
static inline bool sd_id128_equal(sd_id128_t a, sd_id128_t b) {
return memcmp(&a, &b, 16) == 0;
}

2
src/test-id128.c
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@ -45,5 +45,7 @@ int main(int argc, char *argv[]) {
printf("waldi: %s\n", sd_id128_to_string(ID128_WALDI, t));
printf("waldi2: " SD_FORMAT_ID128_STR "\n", SD_FORMAT_ID128_VAL(ID128_WALDI));
return 0;
}