asecd
computes the element-wise inverse secant of the argument, results in degree.
Syntax
y = asecd(x)
Arguments
- x
Real or complex array
- y
Real or complex array
Description
Computes the element-wise inverse secant of the argument, results in
degree. For real input data with absolute value greater than
1
the results are real and in [-90 90]
.
asecd(x)
is equal to
asec(x)*180/%pi
.
Sample
See also
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.
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