From e78ef57c93d66da483e0482ce0907dfe16dc8d27 Mon Sep 17 00:00:00 2001 From: Timothee Cour Date: Thu, 7 Apr 2022 14:38:01 -0700 Subject: typetraits: add toSigned, toUnsigned (#18445) * typetraits: add toSigned, toUnsigned * improve and add tests Co-authored-by: Andreas Rumpf Co-authored-by: flywind --- lib/std/private/bitops_utils.nim | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'lib/std/private') diff --git a/lib/std/private/bitops_utils.nim b/lib/std/private/bitops_utils.nim index d54977b4e..0b9484416 100644 --- a/lib/std/private/bitops_utils.nim +++ b/lib/std/private/bitops_utils.nim @@ -10,8 +10,13 @@ template forwardImpl*(impl, arg) {.dirty.} = else: impl(x.uint64) -template toUnsigned*(x: int8): uint8 = cast[uint8](x) -template toUnsigned*(x: int16): uint16 = cast[uint16](x) -template toUnsigned*(x: int32): uint32 = cast[uint32](x) -template toUnsigned*(x: int64): uint64 = cast[uint64](x) -template toUnsigned*(x: int): uint = cast[uint](x) +# this could also be implemented via: +# import std/typetraits +# template castToUnsigned*(x: SomeInteger): auto = cast[toUnsigned(typeof(x))](x) + +template castToUnsigned*(x: int8): uint8 = cast[uint8](x) +template castToUnsigned*(x: int16): uint16 = cast[uint16](x) +template castToUnsigned*(x: int32): uint32 = cast[uint32](x) +template castToUnsigned*(x: int64): uint64 = cast[uint64](x) +template castToUnsigned*(x: int): uint = cast[uint](x) +template castToUnsigned*[T: SomeUnsignedInt](x: T): T = x -- cgit 1.4.1-2-gfad0