COSH(3) |
Library Functions Manual |
COSH(3) |
NAME
cosh, coshf — hyperbolic cosine function
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <math.h>
double
cosh(double x);
float
coshf(float x);
DESCRIPTION
The cosh() and coshf() functions compute the hyperbolic cosine of x.
RETURN VALUES
If the magnitude of x is too large, cosh(x) and coshf(x) return Inf and sets the global variable errno to ERANGE.
STANDARDS
The cosh() function conforms to ANSI X3.159-1989 (“ANSI C89”).