acscd

computes the element-wise inverse cosecant of the argument, results in degree.

Calling Sequence

y = acscd(x)

Arguments

:x Real array. : :y Real or complex array. :

Description

Computes the element-wise inverse cosecant of the argument an return the results in degree. For real argument with absolute value greater than 1 the result is real.

Sample

Examples

x=`linspace`_(1,20,200);
x=[-x($:-1:1) %nan x];
`plot`_(x,acscd(x))

See Also

• cscd Computes the element-wise cosecant of the argument given in degree.
• acsc computes the element-wise inverse cosecant of the argument.

References

• Kahan, W., “Branch cuts for complex elementary functions, or, Much ado about nothing’s sign bit”, Proceedings of the joing IMA/SIAM conference on The State of the Art in Numerical Analysis, University of Birmingham, A. Iserles and M.J.D. Powell, eds, Clarendon Press, Oxford, 1987, 165-210.