# 4. Elementary Functions

$\mathrm{cosh}x$ denotes the hyperbolic cosine function; see DLMF (4.28.2).
Computations are currently restricted to real values of $x$, with $|x|\le {10}^{9}$.
Evaluate $\mathrm{cosh}x$ as a Tabulation or Comparison?
Get function arguments from form or data file?
Specify the data file to compare tofor arguments:
Note: The lines in the data file must contain values for $x$ and $\mathrm{cosh}x$ in that order, separated by commas or spaces.
Specify grid for function parameters and arguments:
Choose $x$ starting from ending with stepping by
Show output to digits, the number of digits in file, using
Return unformatted output only