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test: add unit test for integer log2 function

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add a unit testcase for rte_log2_u32.

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Reviewed-by: Olivier Matz <olivier.matz@6wind.com>
This commit is contained in:
Jerin Jacob 2017-07-06 19:50:24 +05:30 committed by Thomas Monjalon
parent fcee050aa1
commit 05c4345ef5
1 changed files with 21 additions and 0 deletions
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21
test/test/test_common.c
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@ -33,6 +33,7 @@
#include <stdio.h> #include <stdio.h>
#include <string.h> #include <string.h>
#include <math.h>
#include <rte_common.h> #include <rte_common.h>
#include <rte_hexdump.h> #include <rte_hexdump.h>
#include <rte_pause.h> #include <rte_pause.h>
@ -159,6 +160,25 @@ test_align(void)
return 0; return 0;
} }
static int
test_log2(void)
{
uint32_t i, base, compare;
const uint32_t max = 0x10000;
const uint32_t step = 1;
for (i = 0; i < max; i = i + step) {
base = (uint32_t)ceilf(log2((uint32_t)i));
compare = rte_log2_u32(i);
if (base != compare) {
printf("Wrong rte_log2_u32(%x) val %x, expected %x\n",
i, compare, base);
return TEST_FAILED;
}
}
return 0;
}
static int static int
test_common(void) test_common(void)
{ {
@ -166,6 +186,7 @@ test_common(void)
ret |= test_align(); ret |= test_align();
ret |= test_macros(0); ret |= test_macros(0);
ret |= test_misc(); ret |= test_misc();
ret |= test_log2();
return ret; return ret;
} }