single page | use frames summary class fields routine details file attributes

math/

sech.pro

top source sech

Math

result = sech(x)

Calculates the hyperbolic inverse cosine function (sech).

Return value

1 / cosh(X)

Parameters

x in: Argument to sech (may be an array).

Examples

    IDL> PRINT, SECH(1.)
         0.648054

Author information

History:: Written by: Jeremy Bailin 12 June 2008 Public release in JBIU

File attributes

Modification date:	Wed Apr 15 16:07:58 2009
Lines:	33