| casin | Function (ROM Call 0x13B)

math.h, timath.h

void casin (float z_re, float z_im, float *w_re, float *w_im);

Complex arc sine.

casin calculates the arc sine w = asin(z) of the complex number which real and imaginary parts are z_re and z_im, and stores real and imaginary part of the result in floating point destinations pointed to by w_re and w_im. The complex arc sine is defined by
asin(z) = -i ln (i z + sqrt (1 - z^2))
where ln and sqrt are complex natural logarithm and complex square root (see cln and csqrt).

Uses: asin, fabs, is_inf, is_nan, pow, sqrt, _bcd_math
Used by: casinh