discard """ 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( 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) static : # test bitopts at compile time with vm 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) static: # 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) echo "OK" main()