Appendix A: System Routines — Direct Floating Point Operations
373
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
atanh
Declaration:
double
atanh
(double
x
)
Category(ies):
Direct Floating Point Operations
Description:
Computes the inverse hyperbolic tangent of
x
.
Inputs:
x
— A double floating-point value.
Outputs:
If
L
1 <
x
< 1, then returns inverse hyperbolic tangent of
x
.
If
x
= 1, then returns floating-point positive infinity.
If
x
=
L
1, then returns floating-point negative infinity.
If
x
<
L
1 or
x
> 1, then returns a floating-point NAN.
Assumptions:
None
Side Effects:
None
Availability:
All versions of the TI
-
89 / TI
-
92 Plus.
TI
-
89 / TI
-
92 Plus
Differences:
None
See Also: acosh, asinh, cosh, sinh, tanh
Example:
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