float sinhf(float x);
sinhf calculates the hyperbolic sine of x.
If |x| > ~88.7228, errno is set to EDOM and sinhf returns HUGE_VALF.
If x is +∞, −∞, or NaN, sinhf returns |x|. If |x| > ~88.7228, sinhf returns +∞ or −∞ depending upon the sign of x.