47 lines
1.4 KiB
Nim
47 lines
1.4 KiB
Nim
# Stint
|
|
# Copyright 2018 Status Research & Development GmbH
|
|
# Licensed under either of
|
|
#
|
|
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
|
|
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
|
|
#
|
|
# at your option. This file may not be copied, modified, or distributed except according to those terms.
|
|
|
|
import ./datatypes, ./as_words
|
|
|
|
func isZero*(n: SomeUnsignedInt): bool {.inline.} =
|
|
n == 0
|
|
|
|
func isZero*(n: UintImpl): bool {.inline.} =
|
|
asWords(n, ignoreEndianness = true):
|
|
if n != 0:
|
|
return false
|
|
return true
|
|
|
|
func `<`*(x, y: UintImpl): bool {.inline.}=
|
|
# Lower comparison for multi-precision integers
|
|
asWordsZip(x, y, ignoreEndianness = false):
|
|
if x != y:
|
|
return x < y
|
|
return false # they're equal
|
|
|
|
func `==`*(x, y: UintImpl): bool {.inline.}=
|
|
# Equal comparison for multi-precision integers
|
|
asWordsZip(x, y, ignoreEndianness = true):
|
|
if x != y:
|
|
return false
|
|
return true # they're equal
|
|
|
|
func `<=`*(x, y: UintImpl): bool {.inline.}=
|
|
# Lower or equal comparison for multi-precision integers
|
|
asWordsZip(x, y, ignoreEndianness = false):
|
|
if x != y:
|
|
return x < y
|
|
return true # they're equal
|
|
|
|
func isOdd*(x: UintImpl): bool {.inline.}=
|
|
bool(x.least_significant_word and 1)
|
|
|
|
func isEven*(x: UintImpl): bool {.inline.}=
|
|
not x.isOdd
|