Reference Hyperbolic functions
lz_archypertangent
The number whose hyperbolic tangent is the operand.
long lz_archypertangent( CLZNumber* leftOperand, CLZNumber* targetNumber = nullptr );½ ln((1 + x) ÷ (1 − x)), for x between −1 and 1, correctly rounded. At ±1 it has a pole: kUndefinedResult, flagged infinite. Beyond them there is no real answer: kFailed, flagged not-a-number.
Examples
| Call | Answer | Returns |
|---|---|---|
lz_archypertangent( 0.5 ) | 0.549306144334054845697622618461262852 | kNoError |
lz_archypertangent( −0.5 ) | −0.549306144334054845697622618461262852 | kNoError |
lz_archypertangent( 1 ) | infinite | kUndefinedResult |
lz_archypertangent( 2 ) | not a number | kFailed |
Each answer is what Addaptic printed for the call, at 36 places unless a setting is shown.
Returns
kNoError (0) when the answer is written. Otherwise an error code, with the answer flagged infinite or not-a-number; see Errors and flags.
See also
lz_hypertangentThe hyperbolic tangent.lzc_archypertangentThe principal inverse hyperbolic tangent of a complex number.