diff options
| -rw-r--r-- | lib/hash.go | 5 | ||||
| -rw-r--r-- | lib/hash_test.go | 16 |
2 files changed, 21 insertions, 0 deletions
diff --git a/lib/hash.go b/lib/hash.go index 8c8aeef..b636e17 100644 --- a/lib/hash.go +++ b/lib/hash.go @@ -21,3 +21,8 @@ func shaRotr(x uint32, n uint) uint32 { func shaRotl(x uint32, n uint) uint32 { return (x << n) | (x >> (32 - n)) } + +// Right Shift +func shaShr(x uint32, n uint) uint32 { + return x >> n +} diff --git a/lib/hash_test.go b/lib/hash_test.go new file mode 100644 index 0000000..bde6b3f --- /dev/null +++ b/lib/hash_test.go @@ -0,0 +1,16 @@ +// Copyright © 2022 siddharth <s@ricketyspace.net> +// SPDX-License-Identifier: ISC + +package lib + +import ( + "testing" +) + +func TestShaShr(t *testing.T) { + s := uint32(256) + sr := shaShr(s, 2) + if sr != s>>2 { + t.Errorf("shaShr test failed") + } +} |