Synopsis
float coshf(float x);
Description

coshf calculates the hyperbolic sine of x.

If |x| > ~88.7228, errno is set to EDOM and coshf returns HUGE_VALF.

If x is +∞, −∞, or NaN, coshf returns |x|.
If |x| > ~88.7228, coshf returns +∞ or −∞ depending upon the sign of x.