cosh, coshf, coshl - Hyperbolic cosine

Definition	#include <math.h> double cosh(double x); float coshf(float x); (C11) long double coshl(long double x); (C11) These functions calculate the hyperbolic cosine for the floating-point number x.
Return val.	cosh(x)	for a floating-point number x.
	HUGE_VAL HUGE_VALF HUGE_VALL	depending on the function type, if an overflow occurs. errno is set to ERANGE (result too large).
Example	The following program lists the hyperbolic cosine values corresponding to input values in the interval [-1.0, +1.0]. #include <math.h> #include <stdio.h> int main(void) { double x; for (x = -1.0; x < 1.0; x = x + 0.1) printf("cosh(%f) = %f\n", x, cosh(x)); return 0; }
See also	acos, cos, sin, asin, sinh, tan, atan, atan2, tanh