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| author | Ico Doornekamp <github@zevv.nl> | 2019-01-23 09:16:14 +0100 |
|---|---|---|
| committer | Andreas Rumpf <rumpf_a@web.de> | 2019-01-23 09:16:14 +0100 |
| commit | 0d480bfe22651edc9bdf7c5976668b47eb61b0a5 (patch) | |
| tree | a82f206749e30be63e7c210a29c3d526cbebcfc4 /tests/stdlib | |
| parent | 36e34d9aedd5d6f39dcc78a2239752c94227c542 (diff) | |
| download | Nim-0d480bfe22651edc9bdf7c5976668b47eb61b0a5.tar.gz | |
Added basic bit manipulation procs to bitops (#10338)
Diffstat (limited to 'tests/stdlib')
| -rw-r--r-- | tests/stdlib/tbitops.nim | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/tests/stdlib/tbitops.nim b/tests/stdlib/tbitops.nim index d8c6da1d4..b8b44703c 100644 --- a/tests/stdlib/tbitops.nim +++ b/tests/stdlib/tbitops.nim @@ -162,6 +162,63 @@ proc main() = doAssert( U64A.rotateLeftBits(64) == U64A) doAssert( U64A.rotateRightBits(64) == U64A) + block: + # mask operations + var v: uint8 + v.setMask(0b1100_0000) + v.setMask(0b0000_1100) + doAssert(v == 0b1100_1100) + v.flipMask(0b0101_0101) + doAssert(v == 0b1001_1001) + v.clearMask(0b1000_1000) + doAssert(v == 0b0001_0001) + v.clearMask(0b0001_0001) + doAssert(v == 0b0000_0000) + block: + # single bit operations + var v: uint8 + v.setBit(0) + doAssert v == 0x0000_0001 + v.setBit(1) + doAssert v == 0b0000_0011 + v.flipBit(7) + doAssert v == 0b1000_0011 + v.clearBit(0) + doAssert v == 0b1000_0010 + v.flipBit(1) + doAssert v == 0b1000_0000 + doAssert v.testbit(7) + doAssert not v.testbit(6) + block: + # multi bit operations + var v: uint8 + v.setBits(0, 1, 7) + doAssert v == 0b1000_0011 + v.flipBits(2, 3) + doAssert v == 0b1000_1111 + v.clearBits(7, 0, 1) + doAssert v == 0b0000_1100 + block: + # signed + var v: int8 + v.setBit(7) + doAssert v == -128 + block: + var v: uint64 + v.setBit(63) + doAssert v == 0b1000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000'u64 + block: + # Test if RangeError is thrown if indexing out of range + try: + var v: uint32 + var i = 32 + v.setBit(i) + doAssert false + except RangeError: + discard + except: + doAssert false + echo "OK" main() |