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add Python facility for int2bv, fix #1398
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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@ -3568,6 +3568,14 @@ def BV2Int(a, is_signed=False):
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## investigate problem with bv2int
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return ArithRef(Z3_mk_bv2int(ctx.ref(), a.as_ast(), is_signed), ctx)
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def Int2BV(a, num_bits):
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"""Return the z3 expression Int2BV(a, num_bits).
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It is a bit-vector of width num_bits and represents the
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modulo of a by 2^num_bits
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"""
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ctx = a.ctx
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return BitVecRef(Z3_mk_int2bv(ctx.ref(), num_bits, a.as_ast()), ctx)
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def BitVecSort(sz, ctx=None):
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"""Return a Z3 bit-vector sort of the given size. If `ctx=None`, then the global context is used.
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