diff options
| -rw-r--r-- | lib/system/dollars.nim | 7 | ||||
| -rw-r--r-- | tests/stdlib/tdigitsutils.nim | 23 |
2 files changed, 23 insertions, 7 deletions
diff --git a/lib/system/dollars.nim b/lib/system/dollars.nim index 75390b0e1..3d824a965 100644 --- a/lib/system/dollars.nim +++ b/lib/system/dollars.nim @@ -7,15 +7,8 @@ proc `$`*(x: int): string {.magic: "IntToStr", noSideEffect.} ## spelling `toString`:idx:. template dollarImpl(x: uint | uint64, result: var string) = - type destTyp = typeof(x) - if x == 0: - return "0" - elif x == 1: - return "1" - let length = digits10(x) setLen(result, length) - numToString(result, x, length) when defined(js): diff --git a/tests/stdlib/tdigitsutils.nim b/tests/stdlib/tdigitsutils.nim new file mode 100644 index 000000000..7cf63411f --- /dev/null +++ b/tests/stdlib/tdigitsutils.nim @@ -0,0 +1,23 @@ +import std/private/digitsutils + +template main = + block: # digits10 + doAssert digits10(0'u64) == 1 + # checks correctness on all powers of 10 + [0,-1,1] + var x = 1'u64 + var num = 1 + while true: + # echo (x, num) + doAssert digits10(x) == num + doAssert digits10(x+1) == num + if x > 1: + doAssert digits10(x-1) == num - 1 + num += 1 + let xOld = x + x *= 10 + if x < xOld: + # wrap-around + break + +static: main() +main() |