Issues

• Log, Log2, Log10, Exp, Exp10, Pow, the hyperbolics, Acos and SinPi return about 50 wrong trailing digits when asked for more than ~140 digits, while Sin and Cos refuse the same request

  bug
  ktsu-dev/PreciseNumber#143 · Filter by author matt-edmondson opened on Sep 30, 2026
  1

• RootN with a negative degree misrounds the last digit: RootN(3, -3, 10) returns 0.6933612743, correct is 0.6933612744

  bug
  ktsu-dev/PreciseNumber#142 · Filter by author matt-edmondson opened on Sep 30, 2026
  1

• To<NFloat>(), NFloat.CreateChecked(x) and PreciseNumber.CreateChecked(nfloat) throw NotSupportedException, although ToPreciseNumber() accepts NFloat

  bug
  ktsu-dev/PreciseNumber#138 · Filter by author matt-edmondson opened on Sep 29, 2026
  1

• x + 0 costs time and memory proportional to x's exponent: 1e300000 + Zero takes ~1 s, and 1e2000000000 + Zero throws OutOfMemoryException

  bug
  ktsu-dev/PreciseNumber#137 · Filter by author matt-edmondson opened on Sep 29, 2026
  1

• 1e2000000000 + 1e-2000000000 throws ArgumentOutOfRangeException ("exponent must be non-negative"): exponent alignment wraps int

  bug
  ktsu-dev/PreciseNumber#135 · Filter by author matt-edmondson opened on Sep 28, 2026
  1

• ToString/TryFormat throw FormatException for every format except "G": $"{x:F2}", "N2" and "0.00" all crash

  bug
  ktsu-dev/PreciseNumber#134 · Filter by author matt-edmondson opened on Sep 28, 2026
  1

• ExpM1(-1e10) throws OverflowException instead of returning -1, and ExpM1/LogP1/Sinh/Cosh/Asinh/Acosh take seconds to minutes for large arguments

  bugready
  ktsu-dev/PreciseNumber#133 · Filter by author matt-edmondson opened on Sep 28, 2026
  1

• Parse/TryParse ignore NumberStyles: "1.5" and "1e5" parse under NumberStyles.Integer, and "-5" parses under NumberStyles.None

  bugready
  ktsu-dev/PreciseNumber#132 · Filter by author matt-edmondson opened on Sep 28, 2026
  1

• Pow(-1, n) throws OverflowException for any integer |n| ≥ 2^31, although the result is ±1

  bugready
  ktsu-dev/PreciseNumber#128 · Filter by author matt-edmondson opened on Sep 27, 2026
  1

• Pow with a fractional exponent misrounds the last digit: Pow(19, 1.5) ends in …417 instead of …416 (double rounding without guard digits)

  bugready
  ktsu-dev/PreciseNumber#127 · Filter by author matt-edmondson opened on Sep 27, 2026
  1

• Tan refuses precisions that Sin/Cos accept: its 10 internal guard digits are counted against the π reduction ceiling

  bugready
  ktsu-dev/PreciseNumber#125 · Filter by author matt-edmondson opened on Sep 27, 2026
  1

• Sin/Cos/SinCos/Tan at default precision throw ArgumentOutOfRangeException on the library's own constants (e.g. Sin(PreciseNumber.Pi))

  bugready
  ktsu-dev/PreciseNumber#124 · Filter by author matt-edmondson opened on Sep 27, 2026
  1

• Investigate benchmark regressions in Max, CompareTo, ReduceSignificance, Pow, and Divide since 2.0

  enhancementP4
  ktsu-dev/PreciseNumber#76 · Filter by author matt-edmondson opened on Sep 15, 2026
  5