COSH(3) BSD Library Functions Manual COSH(3)NAMEcosh, coshf -- hyperbolic cosine functionLIBRARYMath Library (libm, -lm)SYNOPSIS#include <math.h> double cosh(double x); float coshf(float x);DESCRIPTIONThe cosh() and coshf() functions compute the hyperbolic cosine of x.RETURN VALUESIf the magnitude of x is too large, cosh(x) and coshf(x) return Inf and sets the global variable errno to ERANGE.SEE ALSOacos(3), asin(3), atan(3), atan2(3), cos(3), math(3), sin(3), sinh(3), tan(3), tanh(3)STANDARDSThe cosh() function conforms to ANSI X3.159-1989 (``ANSI C89'').BSDMay 2, 1991 BSD