mirror of
https://github.com/ehw-fit/ariths-gen.git
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147 lines
4.3 KiB
Python
147 lines
4.3 KiB
Python
from ariths_gen.wire_components import (
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Wire,
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ConstantWireValue0,
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ConstantWireValue1,
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Bus
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)
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from ariths_gen.core.arithmetic_circuits import GeneralCircuit
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from ariths_gen.multi_bit_circuits.adders import (
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UnsignedCarryLookaheadAdder,
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UnsignedPGRippleCarryAdder,
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UnsignedRippleCarryAdder,
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SignedCarryLookaheadAdder,
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SignedPGRippleCarryAdder,
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SignedRippleCarryAdder,
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UnsignedCarrySkipAdder,
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SignedCarrySkipAdder,
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)
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from ariths_gen.multi_bit_circuits.multipliers import (
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UnsignedDaddaMultiplier,
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UnsignedArrayMultiplier,
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UnsignedWallaceMultiplier,
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UnsignedCarrySaveMultiplier,
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SignedArrayMultiplier,
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SignedDaddaMultiplier,
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SignedWallaceMultiplier,
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SignedCarrySaveMultiplier
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)
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from ariths_gen.multi_bit_circuits.approximate_multipliers import (
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UnsignedTruncatedArrayMultiplier,
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UnsignedTruncatedCarrySaveMultiplier,
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UnsignedBrokenArrayMultiplier,
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UnsignedBrokenCarrySaveMultiplier
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)
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from ariths_gen.core.cgp_circuit import UnsignedCGPCircuit, SignedCGPCircuit
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import numpy as np
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from io import StringIO
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def test_cgp_unsigned_add():
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""" Test unsigned adders """
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N = 7
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a = Bus(N=N, prefix="a")
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b = Bus(N=N, prefix="b")
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av = np.arange(2**N)
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bv = av.reshape(-1, 1)
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expected = av + bv
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for c in [UnsignedCarryLookaheadAdder, UnsignedPGRippleCarryAdder, UnsignedRippleCarryAdder, UnsignedCarrySkipAdder]:
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add = c(a, b)
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code = StringIO()
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add.get_cgp_code_flat(code)
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cgp_code = code.getvalue()
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print(cgp_code)
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add2 = UnsignedCGPCircuit(cgp_code, [N, N])
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o = StringIO()
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add2.get_v_code_flat(o)
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print(o.getvalue())
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r = add2(av, bv)
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assert add(0, 0) == 0
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assert add2(0, 0) == 0
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np.testing.assert_array_equal(expected, r)
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def test_cgp_signed_add():
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""" Test signed adders """
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N = 7
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a = Bus(N=N, prefix="a")
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b = Bus(N=N, prefix="b")
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av = np.arange(-(2**(N-1)), 2**(N-1))
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bv = av.reshape(-1, 1)
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expected = av + bv
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for c in [SignedCarryLookaheadAdder, SignedPGRippleCarryAdder, SignedRippleCarryAdder, SignedCarrySkipAdder]:
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add = c(a, b)
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code = StringIO()
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add.get_cgp_code_flat(code)
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cgp_code = code.getvalue()
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print(cgp_code)
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add2 = SignedCGPCircuit(cgp_code, [N, N])
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r = add2(av, bv)
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assert add(0, 0) == 0
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assert add2(0, 0) == 0
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np.testing.assert_array_equal(expected, r)
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def test_unsigned_mul():
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""" Test unsigned multipliers """
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N = 7
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a = Bus(N=N, prefix="a")
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b = Bus(N=N, prefix="b")
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av = np.arange(2**N)
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bv = av.reshape(-1, 1)
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expected = av * bv
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for c in [UnsignedDaddaMultiplier, UnsignedArrayMultiplier, UnsignedCarrySaveMultiplier, UnsignedWallaceMultiplier]:
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mul = c(a, b)
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code = StringIO()
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mul.get_cgp_code_flat(code)
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cgp_code = code.getvalue()
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mul2 = UnsignedCGPCircuit(cgp_code, [N, N])
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r = mul2(av, bv)
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np.testing.assert_array_equal(expected, r)
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def test_signed_mul():
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""" Test signed multipliers """
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N = 7
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a = Bus(N=N, prefix="a")
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b = Bus(N=N, prefix="b")
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av = np.arange(-(2**(N-1)), 2**(N-1))
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bv = av.reshape(-1, 1)
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expected = av * bv
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for c in [SignedDaddaMultiplier, SignedArrayMultiplier, SignedWallaceMultiplier, SignedCarrySaveMultiplier]:
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mul = c(a, b)
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code = StringIO()
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mul.get_cgp_code_flat(code)
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cgp_code = code.getvalue()
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mul2 = SignedCGPCircuit(cgp_code, [N, N])
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r = mul2(av, bv)
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np.testing.assert_array_equal(expected, r)
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def test_cgp_variant1():
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# one input is connected to the output (first bit)
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cgp = "{16,9,37,1,2,1,0}([18]15,12,1)([19]7,7,4)([20]3,12,5)([21]17,3,0)([22]8,14,3)([23]15,3,6)([24]14,0,2)([25]9,9,5)([26]17,13,1)([27]12,13,0)([28]7,16,8)([29]12,11,0)([30]5,13,3)([31]5,13,2)([32]30,12,5)([33]30,29,2)([34]31,33,3)([35]6,14,4)([36]6,14,2)([37]35,34,4)([38]35,34,2)([39]36,38,3)([40]7,15,4)([41]7,15,2)([42]40,39,4)([43]40,39,2)([44]41,43,3)([45]8,16,4)([46]8,16,2)([47]45,44,4)([48]45,44,2)([49]46,48,3)([50]9,17,4)([51]9,17,2)([52]50,49,4)([53]50,49,2)([54]51,53,3)(11,40,33,32,37,42,47,52,54)"
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c = UnsignedCGPCircuit(cgp, [8, 8], name="cgp_circuit")
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assert c(0, 0) == 8 # TypeError: 'int' object is not subscriptable |