Function test_log2

dpdk/app/test/test_common.c:242–289

}

static int
test_log2(void)
{
	uint32_t i, base, compare;
	const uint32_t max = 0x10000;
	const uint32_t step = 1;

	compare = rte_log2_u32(0);
	if (compare != 0) {
		printf("Wrong rte_log2_u32(0) val %x, expected 0\n", compare);
		return TEST_FAILED;
	}

	compare = rte_log2_u64(0);
	if (compare != 0) {
		printf("Wrong rte_log2_u64(0) val %x, expected 0\n", compare);
		return TEST_FAILED;
	}

	for (i = 1; i < max; i = i + step) {
		uint64_t i64;

		/* extend range for 64-bit */
		i64 = (uint64_t)i << 32;
		base = (uint32_t)ceilf(log2(i64));
		compare = rte_log2_u64(i64);
		if (base != compare) {
			printf("Wrong rte_log2_u64(%" PRIx64 ") val %x, expected %x\n",
				i64, compare, base);
			return TEST_FAILED;
		}

		base = (uint32_t)ceilf(log2((uint32_t)i));
		compare = rte_log2_u32((uint32_t)i);
		if (base != compare) {
			printf("Wrong rte_log2_u32(%x) val %x, expected %x\n",
				i, compare, base);
			return TEST_FAILED;
		}
		compare = rte_log2_u64((uint64_t)i);
		if (base != compare) {
			printf("Wrong rte_log2_u64(%x) val %x, expected %x\n",
				i, compare, base);
			return TEST_FAILED;
		}
	}
	return 0;
}

static int
test_fls(void)