mirrors/Nim
1
0
Fork 0
mirror of https://github.com/nim-lang/Nim.git synced 2025-12-29 09:24:36 +00:00
Code Issues Packages Projects Releases Wiki Activity
Files
558ecd1ca64fecc2ef43bb327dcd055e199beec5
Nim/tests/stdlib/tbitops.nim
Andreas Rumpf d70e292571 makes more tests green
2019-09-02 22:03:06 +02:00

268 lines
9.0 KiB
Nim
Raw Blame History

discard """
nimout: "OK"
output: "OK"
"""
import bitops
proc main() =
const U8 = 0b0011_0010'u8
const I8 = 0b0011_0010'i8
const U16 = 0b00100111_00101000'u16
const I16 = 0b00100111_00101000'i16
const U32 = 0b11010101_10011100_11011010_01010000'u32
const I32 = 0b11010101_10011100_11011010_01010000'i32
const U64A = 0b01000100_00111111_01111100_10001010_10011001_01001000_01111010_00010001'u64
const I64A = 0b01000100_00111111_01111100_10001010_10011001_01001000_01111010_00010001'i64
const U64B = 0b00110010_11011101_10001111_00101000_00000000_00000000_00000000_00000000'u64
const I64B = 0b00110010_11011101_10001111_00101000_00000000_00000000_00000000_00000000'i64
doAssert( (U8 and U8) == bitand(U8,U8) )
doAssert( (I8 and I8) == bitand(I8,I8) )
doAssert( (U16 and U16) == bitand(U16,U16) )
doAssert( (I16 and I16) == bitand(I16,I16) )
doAssert( (U32 and U32) == bitand(U32,U32) )
doAssert( (I32 and I32) == bitand(I32,I32) )
doAssert( (U64A and U64B) == bitand(U64A,U64B) )
doAssert( (I64A and I64B) == bitand(I64A,I64B) )
doAssert( (U8 or U8) == bitor(U8,U8) )
doAssert( (I8 or I8) == bitor(I8,I8) )
doAssert( (U16 or U16) == bitor(U16,U16) )
doAssert( (I16 or I16) == bitor(I16,I16) )
doAssert( (U32 or U32) == bitor(U32,U32) )
doAssert( (I32 or I32) == bitor(I32,I32) )
doAssert( (U64A or U64B) == bitor(U64A,U64B) )
doAssert( (I64A or I64B) == bitor(I64A,I64B) )
doAssert( (U8 xor U8) == bitxor(U8,U8) )
doAssert( (I8 xor I8) == bitxor(I8,I8) )
doAssert( (U16 xor U16) == bitxor(U16,U16) )
doAssert( (I16 xor I16) == bitxor(I16,I16) )
doAssert( (U32 xor U32) == bitxor(U32,U32) )
doAssert( (I32 xor I32) == bitxor(I32,I32) )
doAssert( (U64A xor U64B) == bitxor(U64A,U64B) )
doAssert( (I64A xor I64B) == bitxor(I64A,I64B) )
doAssert( not(U8) == bitnot(U8) )
doAssert( not(I8) == bitnot(I8) )
doAssert( not(U16) == bitnot(U16) )
doAssert( not(I16) == bitnot(I16) )
doAssert( not(U32) == bitnot(U32) )
doAssert( not(I32) == bitnot(I32) )
doAssert( not(U64A) == bitnot(U64A) )
doAssert( not(I64A) == bitnot(I64A) )
doAssert( U64A.fastLog2 == 62)
doAssert( I64A.fastLog2 == 62)
doAssert( U64A.countLeadingZeroBits == 1)
doAssert( I64A.countLeadingZeroBits == 1)
doAssert( U64A.countTrailingZeroBits == 0)
doAssert( I64A.countTrailingZeroBits == 0)
doAssert( U64A.firstSetBit == 1)
doAssert( I64A.firstSetBit == 1)
doAssert( U64A.parityBits == 1)
doAssert( I64A.parityBits == 1)
doAssert( U64A.countSetBits == 29)
doAssert( I64A.countSetBits == 29)
doAssert( U64A.rotateLeftBits(37) == 0b00101001_00001111_01000010_00101000_10000111_11101111_10010001_01010011'u64)
doAssert( U64A.rotateRightBits(37) == 0b01010100_11001010_01000011_11010000_10001010_00100001_11111011_11100100'u64)
doAssert( U64B.firstSetBit == 36)
doAssert( I64B.firstSetBit == 36)
doAssert( U32.fastLog2 == 31)
doAssert( I32.fastLog2 == 31)
doAssert( U32.countLeadingZeroBits == 0)
doAssert( I32.countLeadingZeroBits == 0)
doAssert( U32.countTrailingZeroBits == 4)
doAssert( I32.countTrailingZeroBits == 4)
doAssert( U32.firstSetBit == 5)
doAssert( I32.firstSetBit == 5)
doAssert( U32.parityBits == 0)
doAssert( I32.parityBits == 0)
doAssert( U32.countSetBits == 16)
doAssert( I32.countSetBits == 16)
doAssert( U32.rotateLeftBits(21) == 0b01001010_00011010_10110011_10011011'u32)
doAssert( U32.rotateRightBits(21) == 0b11100110_11010010_10000110_10101100'u32)
doAssert( U16.fastLog2 == 13)
doAssert( I16.fastLog2 == 13)
doAssert( U16.countLeadingZeroBits == 2)
doAssert( I16.countLeadingZeroBits == 2)
doAssert( U16.countTrailingZeroBits == 3)
doAssert( I16.countTrailingZeroBits == 3)
doAssert( U16.firstSetBit == 4)
doAssert( I16.firstSetBit == 4)
doAssert( U16.parityBits == 0)
doAssert( I16.parityBits == 0)
doAssert( U16.countSetBits == 6)
doAssert( I16.countSetBits == 6)
doAssert( U16.rotateLeftBits(12) == 0b10000010_01110010'u16)
doAssert( U16.rotateRightBits(12) == 0b01110010_10000010'u16)
doAssert( U8.fastLog2 == 5)
doAssert( I8.fastLog2 == 5)
doAssert( U8.countLeadingZeroBits == 2)
doAssert( I8.countLeadingZeroBits == 2)
doAssert( U8.countTrailingZeroBits == 1)
doAssert( I8.countTrailingZeroBits == 1)
doAssert( U8.firstSetBit == 2)
doAssert( I8.firstSetBit == 2)
doAssert( U8.parityBits == 1)
doAssert( I8.parityBits == 1)
doAssert( U8.countSetBits == 3)
doAssert( I8.countSetBits == 3)
doAssert( U8.rotateLeftBits(3) == 0b10010001'u8)
doAssert( U8.rotateRightBits(3) == 0b0100_0110'u8)
template test_undefined_impl(ffunc: untyped; expected: int; is_static: bool) =
doAssert( ffunc(0'u8) == expected)
doAssert( ffunc(0'i8) == expected)
doAssert( ffunc(0'u16) == expected)
doAssert( ffunc(0'i16) == expected)
doAssert( ffunc(0'u32) == expected)
doAssert( ffunc(0'i32) == expected)
doAssert( ffunc(0'u64) == expected)
doAssert( ffunc(0'i64) == expected)
template test_undefined(ffunc: untyped; expected: int) =
test_undefined_impl(ffunc, expected, false)
static:
test_undefined_impl(ffunc, expected, true)
when defined(noUndefinedBitOpts):
# check for undefined behavior with zero.
test_undefined(countSetBits, 0)
test_undefined(parityBits, 0)
test_undefined(firstSetBit, 0)
test_undefined(countLeadingZeroBits, 0)
test_undefined(countTrailingZeroBits, 0)
test_undefined(fastLog2, -1)
# check for undefined behavior with rotate by zero.
doAssert( U8.rotateLeftBits(0) == U8)
doAssert( U8.rotateRightBits(0) == U8)
doAssert( U16.rotateLeftBits(0) == U16)
doAssert( U16.rotateRightBits(0) == U16)
doAssert( U32.rotateLeftBits(0) == U32)
doAssert( U32.rotateRightBits(0) == U32)
doAssert( U64A.rotateLeftBits(0) == U64A)
doAssert( U64A.rotateRightBits(0) == U64A)
# check for undefined behavior with rotate by integer width.
doAssert( U8.rotateLeftBits(8) == U8)
doAssert( U8.rotateRightBits(8) == U8)
doAssert( U16.rotateLeftBits(16) == U16)
doAssert( U16.rotateRightBits(16) == U16)
doAssert( U32.rotateLeftBits(32) == U32)
doAssert( U32.rotateRightBits(32) == U32)
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:
proc testReverseBitsInvo(x: SomeUnsignedInt) =
doAssert(reverseBits(reverseBits(x)) == x)
proc testReverseBitsPerType(x, reversed: uint64) =
doAssert reverseBits(x) == reversed
doAssert reverseBits(cast[uint32](x)) == cast[uint32](reversed shr 32)
doAssert reverseBits(cast[uint32](x shr 16)) == cast[uint32](reversed shr 16)
doAssert reverseBits(cast[uint16](x)) == cast[uint16](reversed shr 48)
doAssert reverseBits(cast[uint8](x)) == cast[uint8](reversed shr 56)
testReverseBitsInvo(x)
testReverseBitsInvo(cast[uint32](x))
testReverseBitsInvo(cast[uint16](x))
testReverseBitsInvo(cast[uint8](x))
proc testReverseBitsRefl(x, reversed: uint64) =
testReverseBitsPerType(x, reversed)
testReverseBitsPerType(reversed, x)
proc testReverseBitsShift(d, b: uint64) =
var
x = d
y = b
for i in 1..64:
testReverseBitsRefl(x, y)
x = x shl 1
y = y shr 1
proc testReverseBits(d, b: uint64) =
testReverseBitsShift(d, b)
testReverseBits(0x0u64, 0x0u64)
testReverseBits(0xffffffffffffffffu64, 0xffffffffffffffffu64)
testReverseBits(0x0123456789abcdefu64, 0xf7b3d591e6a2c480u64)
testReverseBits(0x5555555555555555u64, 0xaaaaaaaaaaaaaaaau64)
testReverseBits(0x5555555500000001u64, 0x80000000aaaaaaaau64)
testReverseBits(0x55555555aaaaaaaau64, 0x55555555aaaaaaaau64)
testReverseBits(0xf0f0f0f00f0f0f0fu64, 0xf0f0f0f00f0f0f0fu64)
testReverseBits(0x181881810ff00916u64, 0x68900ff081811818u64)
echo "OK"
block: # not ready for vm because exception is compile error
try:
var v: uint32
var i = 32
v.setBit(i)
doAssert false
except RangeError:
discard
except:
doAssert false
main()
static:
# test everything on vm as well
main()
Reference in New Issue View Git Blame Copy Permalink