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Old 03-09-2009
Armadillo C++ Library 0.5.0 (Default branch)
Armadillo is a streamlined C++ linear algebra library (matrix maths) aiming towards a good balance between speed and ease of use. Integer, floating point, and complex numbers are supported, as well as a subset of trigonometric and statistics functions. Optional integration with LAPACK and ATLAS libraries is also provided. A delayed evaluation approach, based on template meta-programming, is used (during compile time) to combine several operations into one and reduce or eliminate the need for temporaries. License: GNU Lesser General Public License (LGPL) Changes:
Cholesky and QR decompositions, element-wise division, comparison operators, and more elegant restriction of template parameters were added. Other changes include faster matrix inverse, a change of the license to LGPL v3+, and updated and rearranged documentation. Image

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catan

CASIN(3)						   BSD Library Functions Manual 						  CASIN(3)

NAME

     casin -- complex inverse sine function
     catan -- complex inverse tangent function

SYNOPSIS

     #include <complex.h>

     double complex
     casin(double complex z);

     long double complex
     casinl(long double complex z);

     float complex
     casinf(float complex z);

     double complex
     catan(double complex z);

     long double complex
     catanl(long double complex z);

     float complex
     catanf(float complex z);

DESCRIPTION

     casin(z) computes the inverse sine of the complex floating-point number z, with branch cuts outside the interval [-1, 1] on the real axis.

     ctan(z) computes the inverse tangent of the complex floating-point number z, with branch cuts outside the interval [-i, i] on the imaginary
     axis.

     Both functions return values in a strip of the complex plane with unbounded imaginary part, and real part in the interval [-Pi/2, Pi/2].

NOTES

     casin and catan are defined in terms of the complex inverse hyperbolic functions as follows:

	   casin(z) = -i * casinh(i*z),
	   catan(z) = -i * catanh(i*z).

SEE ALSO

     casinh(3) catanh(3) complex(3)

STANDARDS

     The casin() and catan() functions conform to ISO/IEC 9899:2011.

4th Berkeley Distribution					 December 11, 2006					 4th Berkeley Distribution