Manpages - casinh.3

casinh, casinhf, casinhl - complex arc sine hyperbolic

  #include <complex.h>

  double complex casinh(double complex z);
  float complex casinhf(float complex z);
  long double complex casinhl(long double complex z);

  Link with -lm.

These functions calculate the complex arc hyperbolic sine of z. If y = casinh(z), then z = csinh(y). The imaginary part of y is chosen in the interval [-pi/2,pi/2].

One has:

      casinh(z) = clog(z + csqrt(z * z + 1))

These functions first appeared in glibc in version 2.1.

For an explanation of the terms used in this section, see *attributes*(7).

C99, POSIX.1-2001, POSIX.1-2008.

*asinh*(3), *cabs*(3), *cimag*(3), *csinh*(3), *complex*(7)

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