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File size: 1,271 Bytes
d326670 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | from runtime.types import Integer, InvalidShift
def band(a: Integer, b: Integer) -> Integer:
return Integer(a.value & b.value)
def bor(a: Integer, b: Integer) -> Integer:
return Integer(a.value | b.value)
def bxor(a: Integer, b: Integer) -> Integer:
return Integer(a.value ^ b.value)
def bnot(a: Integer, width: int = None) -> Integer:
if width is None:
return Integer(~a.value)
return Integer((~a.value) & ((1 << width) - 1))
def shl(a: Integer, n: Integer) -> Integer:
if n.value < 0: raise InvalidShift("negative shift")
return Integer(a.value << n.value)
def shr(a: Integer, n: Integer) -> Integer:
if n.value < 0: raise InvalidShift("negative shift")
return Integer(a.value >> n.value)
def rotl(x: Integer, n: Integer, width: int) -> Integer:
if width <= 0: raise InvalidShift("invalid width")
nmod = n.value % width
mask = (1 << width) - 1
v = x.value & mask
return Integer(((v << nmod) & mask) | ((v >> (width - nmod)) & mask))
def rotr(x: Integer, n: Integer, width: int) -> Integer:
if width <= 0: raise InvalidShift("invalid width")
nmod = n.value % width
mask = (1 << width) - 1
v = x.value & mask
return Integer(((v >> nmod) & mask) | ((v << (width - nmod)) & mask))
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