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e78ef57c93
* typetraits: add toSigned, toUnsigned * improve and add tests Co-authored-by: Andreas Rumpf <rumpf_a@web.de> Co-authored-by: flywind <xzsflywind@gmail.com>
23 lines
764 B
Nim
23 lines
764 B
Nim
template forwardImpl*(impl, arg) {.dirty.} =
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when sizeof(x) <= 4:
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when x is SomeSignedInt:
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impl(cast[uint32](x.int32))
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else:
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impl(x.uint32)
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else:
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when x is SomeSignedInt:
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impl(cast[uint64](x.int64))
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else:
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impl(x.uint64)
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# this could also be implemented via:
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# import std/typetraits
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# template castToUnsigned*(x: SomeInteger): auto = cast[toUnsigned(typeof(x))](x)
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template castToUnsigned*(x: int8): uint8 = cast[uint8](x)
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template castToUnsigned*(x: int16): uint16 = cast[uint16](x)
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template castToUnsigned*(x: int32): uint32 = cast[uint32](x)
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template castToUnsigned*(x: int64): uint64 = cast[uint64](x)
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template castToUnsigned*(x: int): uint = cast[uint](x)
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template castToUnsigned*[T: SomeUnsignedInt](x: T): T = x
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