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journal: u64log2 can be expressed just as __builtin_clzll(n) ^ 63U
[elogind.git]
/
src
/
test
/
test-util.c
diff --git
a/src/test/test-util.c
b/src/test/test-util.c
index 08310c83ca4a754cd06df49a0df154a8e1506d07..eaf7e22d0fd8b1ea3a11d58d610dd845ce16f331 100644
(file)
--- a/
src/test/test-util.c
+++ b/
src/test/test-util.c
@@
-338,6
+338,16
@@
static void test_hostname_is_valid(void) {
assert(!hostname_is_valid("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"));
}
assert(!hostname_is_valid("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"));
}
+static void test_u64log2(void) {
+ assert(u64log2(0) == 0);
+ assert(u64log2(8) == 3);
+ assert(u64log2(9) == 3);
+ assert(u64log2(15) == 3);
+ assert(u64log2(16) == 4);
+ assert(u64log2(1024*1024) == 20);
+ assert(u64log2(1024*1024+5) == 20);
+}
+
int main(int argc, char *argv[]) {
test_streq_ptr();
test_first_word();
int main(int argc, char *argv[]) {
test_streq_ptr();
test_first_word();
@@
-363,6
+373,7
@@
int main(int argc, char *argv[]) {
test_memdup_multiply();
test_bus_path_escape();
test_hostname_is_valid();
test_memdup_multiply();
test_bus_path_escape();
test_hostname_is_valid();
+ test_u64log2();
return 0;
}
return 0;
}