diff options
Diffstat (limited to 'board/cr50/dcrypto/fips_rand.c')
| -rw-r--r-- | board/cr50/dcrypto/fips_rand.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/board/cr50/dcrypto/fips_rand.c b/board/cr50/dcrypto/fips_rand.c index 4529a1cfbf..e3dcf4d298 100644 --- a/board/cr50/dcrypto/fips_rand.c +++ b/board/cr50/dcrypto/fips_rand.c @@ -63,11 +63,12 @@ static struct { static bool repetition_count_test(uint32_t rnd) { uint32_t clz, ctz, clo, cto; + /* count repeating 0 and 1 bits from each side */ - clz = __builtin_clz(rnd); /* # of leading 0s */ - ctz = __builtin_ctz(rnd); /* # of trailing 0s */ - clo = __builtin_clz(~rnd); /* # of leading 1s */ - cto = __builtin_ctz(~rnd); /* # of trailing 1s */ + clz = count_leading_zeros(rnd); /* # of leading 0s */ + ctz = count_trailing_zeros(rnd); /* # of trailing 0s */ + clo = count_leading_zeros(~rnd); /* # of leading 1s */ + cto = count_trailing_zeros(~rnd); /* # of trailing 1s */ /** * check that number of trailing 0/1 in current sample added to |