Rockwell Automation 2708-NBD VBASIC Language Development Kit - Manual (Page 79)

Appendix C
Application Library Subroutines
C–11
SineH! Returns the hyperbolic sine.
y! = SineH! ( x! )
FUNCTION SineH! ( x )
CosineH! Returns the hyperbolic cosine.
y! = CosineH! ( x! )
FUNCTION CosineH! ( x )
ArcTangentH! Returns the inverse hyperbolic tangent.
y! = ArcTangentH! ( x! )
FUNCTION ArcTangentH! ( x )
ArcSineH! Returns the inverse hyperbolic cosine for x = 0.
y! = ArcSineH! ( x! )
FUNCTION ArcSineH! ( x )
ArcCosineH! Returns the inverse hyperbolic cosine for principal
values.
y! = ArcCosineH! ( x! )
FUNCTION ArcCosineH! ( x )