diff options
Diffstat (limited to 'lib/std/private/digitsutils.nim')
| -rw-r--r-- | lib/std/private/digitsutils.nim | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/lib/std/private/digitsutils.nim b/lib/std/private/digitsutils.nim index 588bcaec0..f2d0d25cb 100644 --- a/lib/std/private/digitsutils.nim +++ b/lib/std/private/digitsutils.nim @@ -19,7 +19,7 @@ const # Inspired by https://engineering.fb.com/2013/03/15/developer-tools/three-optimization-tips-for-c # Generates: -# .. code-block:: nim +# ```nim # var res = "" # for i in 0 .. 99: # if i < 10: @@ -27,14 +27,15 @@ const # else: # res.add $i # doAssert res == digits100 +# ``` proc utoa2Digits*(buf: var openArray[char]; pos: int; digits: uint32) {.inline.} = buf[pos] = digits100[2 * digits] buf[pos+1] = digits100[2 * digits + 1] #copyMem(buf, unsafeAddr(digits100[2 * digits]), 2 * sizeof((char))) -proc trailingZeros2Digits*(digits: uint32): int32 {.inline.} = - return trailingZeros100[digits] +proc trailingZeros2Digits*(digits: uint32): int {.inline.} = + trailingZeros100[digits] when defined(js): proc numToString(a: SomeInteger): cstring {.importjs: "((#) + \"\")".} @@ -63,14 +64,14 @@ func addIntImpl(result: var string, x: uint64) {.inline.} = while num >= nbatch: let originNum = num num = num div nbatch - let index = (originNum - num * nbatch) shl 1 + let index = int16((originNum - num * nbatch) shl 1) tmp[next] = digits100[index + 1] tmp[next - 1] = digits100[index] dec(next, 2) # process last 1-2 digits if num < 10: - tmp[next] = chr(ord('0') + num) + tmp[next] = chr(ord('0') + num.uint8) else: let index = num * 2 tmp[next] = digits100[index + 1] @@ -101,9 +102,7 @@ proc addInt*(result: var string; x: int64) {.enforceNoRaises.} = num = cast[uint64](x) else: num = uint64(-x) - let base = result.len - setLen(result, base + 1) - result[base] = '-' + result.add '-' else: num = uint64(x) addInt(result, num) |