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Lines Matching defs:catanh

96  * The code for catanh and catan comes at the end.  It is much simpler than
515  *				| catanh, catan |
578  * catanh(z) = log((1+z)/(1-z)) / 2
582  * catanh(z) = z + O(z^3)   as z -> 0
584  * catanh(z) = 1/z + sign(y)*I*PI/2 + O(1/z^3)   as z -> infinity
586  * Re(catanh(z)) = x/|z|^2 + O(x/z^4)
590 catanh(double complex z)
608 		/* catanh(+-Inf + I*NaN) = +-0 + I*NaN */
611 		/* catanh(NaN + I*+-Inf) = sign(NaN)0 + I*+-PI/2 */
653  * catan(z) = reverse(catanh(reverse(z)))
659 	double complex w = catanh(CMPLX(cimag(z), creal(z)));