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.hd dsnh$m "calculate double precision hyperbolic sine" 04/27/83
longreal function dsnh$m (x)
longreal x
.sp
Library: vswtmath (Subsystem mathematical library)
.fs
This routine calculates the hyperbolic sine of its argument,
defined as sinh(x) = [exp(x) - exp(-x)]/2.  The argument
must be less than 22623.630826296.
The condition SWT_MATH_ERROR$ is signalled if there is an argument error.
An on-unit can be established to deal with this error; the SWT Math
Library contains a default handler named 'err$m' which the user may
utilize.
If an error is signalled, the default return value will be zero.
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The algorithm involved was adapted from the algorithm given in the book
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Software Manual for the Elementary Functions
by William Waite and William Cody, Jr.  (Prentice-Hall, 1980).
.ca
dexp$m, Primos signl$
.sa
dcsh$m (2), dexp$m (2), err$m (2), sinh$m (2),
.br
.ul
SWT Math Library User's Guide
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