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- ASINH Mathematical Library Procedures ASINH
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- NNAAMMEE
- asinh, acosh, atanh - inverse hyperbolic functions
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- SSYYNNOOPPSSIISS
- ##iinncclluuddee <<mmaatthh..hh>>
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- ddoouubbllee aassiinnhh((xx))
- ddoouubbllee xx;;
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- ddoouubbllee aaccoosshh((xx))
- ddoouubbllee xx;;
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- ddoouubbllee aattaannhh((xx))
- ddoouubbllee xx;;
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- DDEESSCCRRIIPPTTIIOONN
- These functions compute the designated inverse hyperbolic
- functions for real arguments.
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- EERRRROORR ((dduuee ttoo RRoouunnddooffff eettcc..))
- These functions inherit much of their error from log1p
- described in exp(3M). On a VAX, acosh is accurate to about
- 3 _u_l_ps, asinh and atanh to about 2 _u_l_ps. An _u_l_p is one _Unit
- in the _Last _Place carried.
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- DDIIAAGGNNOOSSTTIICCSS
- Acosh returns the reserved operand on a VAX if the argument
- is less than 1.
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- Atanh returns the reserved operand on a VAX if the argument
- has absolute value bigger than or equal to 1.
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- SSEEEE AALLSSOO
- math(3M), exp(3M), infnan(3M)
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- AAUUTTHHOORR
- W. Kahan, Kwok-Choi Ng
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- Sprite v1.0 May 12, 1986 1
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