27 lines
863 B
Nim
27 lines
863 B
Nim
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# Mpint
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# Copyright 2018 Status Research & Development GmbH
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# Licensed under either of
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#
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
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#
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import ./datatypes, ./int_bitwise_ops, ./initialization
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func `+=`*(x: var IntImpl, y: IntImpl) {.inline.}=
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## In-place addition for multi-precision signed int
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type SubTy = type x.lo
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x.lo += y.lo
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x.hi += (x.lo < y.lo).toSubtype(SubTy) + y.hi
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func `+`*(x, y: UintImpl): UintImpl {.noInit, inline.}=
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# Addition for multi-precision signed int
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result = x
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result += y
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func `-`*[T: IntImpl](x: T): T {.noInit, inline.}=
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result = not x
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result += one(T)
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