23 lines
828 B
Forth
23 lines
828 B
Forth
\ Copyright 2021 Bradley D. Nelson
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\
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\ Licensed under the Apache License, Version 2.0 (the "License");
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\ you may not use this file except in compliance with the License.
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\ You may obtain a copy of the License at
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\
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\ http://www.apache.org/licenses/LICENSE-2.0
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\
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\ Unless required by applicable law or agreed to in writing, software
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\ distributed under the License is distributed on an "AS IS" BASIS,
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\ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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\ See the License for the specific language governing permissions and
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\ limitations under the License.
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vocabulary registers registers definitions
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( Tools for working with bit masks )
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: m! ( val shift mask a -- )
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dup >r @ over invert and >r >r lshift r> and r> or r> ! ;
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: m@ ( shift mask a -- val ) @ and swap rshift ;
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only forth definitions
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