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| author | Neels Hofmeyr <neels@hofmeyr.de> | 2020-09-13 23:56:21 +0200 |
|---|---|---|
| committer | laforge <laforge@osmocom.org> | 2020-09-14 11:53:46 +0000 |
| commit | 6862cd38a59685d15f9940fcf3882607081e3261 (patch) | |
| tree | b05eb7f328c4fb5d0d4dc5e9aeb5553d12b3ba25 /tests/testsuite.at | |
| parent | c0ac4e37c90149785b6fa77a59bb609a46474582 (diff) | |
bitXXgen: add bitgen_test.c
The autogenerated bitXXgen.h headers for osmo_load16le_ext() thru
osmo_store64_be() are not actually tested at all. Add a test.
The test output shows that the osmo_load*be_ext for a shorter len do not return
nicely matching results. A practical example showing the difficulty in storing
and loading 24bit integer values as/from big-endian:
uint8_t buf[4];
memset(buf, 0, sizeof(buf));
osmo_store32be_ext(0x00112233, buf, 3); // stores 11 22 33
printf("%s\n", osmo_hexdump(buf, 4));
uint32_t r = osmo_load32be_ext(buf, 3); // returns 0x11223300, not 0x00112233
printf("0x%x\n", r);
output is:
11 22 33 00
0x11223300
In contrast, the little-endian variant properly aligns the loaded bytes on the
least significant octet:
uint8_t buf[4];
memset(buf, 0, sizeof(buf));
osmo_store32le_ext(0x00112233, buf, 3); // stores 33 22 11
printf("%s\n", osmo_hexdump(buf, 4));
uint32_t r = osmo_load32le_ext(buf, 3); // returns 0x00112233 as expected
printf("0x%x\n", r);
output for le is:
33 22 11 00
0x112233
Change-Id: I5542ace54376a206aa8574812d4c742c86c293b4
Diffstat (limited to 'tests/testsuite.at')
| -rw-r--r-- | tests/testsuite.at | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tests/testsuite.at b/tests/testsuite.at index 1955800e..493c16f4 100644 --- a/tests/testsuite.at +++ b/tests/testsuite.at @@ -396,3 +396,9 @@ AT_KEYWORDS([i460_mux]) cat $abs_srcdir/i460_mux/i460_mux_test.ok > expout AT_CHECK([$abs_top_builddir/tests/i460_mux/i460_mux_test], [0], [expout], [ignore]) AT_CLEANUP + +AT_SETUP([bitgen]) +AT_KEYWORDS([bitgen]) +cat $abs_srcdir/bitgen/bitgen_test.ok > expout +AT_CHECK([$abs_top_builddir/tests/bitgen/bitgen_test], [0], [expout], [ignore]) +AT_CLEANUP |