| changeset 252 | a4dc62a46ee4 |
| parent 251 | f04b33ce250f |
| child 253 | 132634d24019 |
| 251:f04b33ce250f | 252:a4dc62a46ee4 |
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1 (* Title: HOL/IOA/example/Packet.thy |
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2 ID: $Id$ |
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3 Author: Tobias Nipkow & Konrad Slind |
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4 Copyright 1994 TU Muenchen |
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5 |
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6 Packets |
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7 *) |
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8 |
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9 Packet = Arith + |
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10 |
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11 types |
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12 |
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13 'msg packet = "bool * 'msg" |
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14 |
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15 consts |
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16 |
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17 hdr :: "'msg packet => bool" |
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18 msg :: "'msg packet => 'msg" |
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19 |
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20 defs |
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21 |
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22 hdr_def "hdr == fst" |
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23 msg_def "msg == snd" |
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24 |
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25 end |