cosh
hyperbolic cosine function
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INTERFACE
#include <math.h>
double cosh ( double x )
long coshl ( long double x )
float coshf ( float x )DESCRIPTION
The cosh function computes the hyperbolic cosine of x, which is defined through:
(1)
Example 1
Workings
\code #include <stdio.h> #include <math.h> int main(void) { double x = 0.5; double result = cosh(x); printf("The hyperbolic cosine of %lf is %lf
", x, result); return 0; } \endcode
Solution
Output:
The hyperbolic cosine of 0.500000 is 1.127626
SPECIAL VALUES
cosh ( ±0 ) returns 1.
cosh ( ±∞ ) returns +∞.
SEE ALSO
acos, asin, atan, atan2, cos, sin, sinh, tan, tanh
STANDARDS
The cosh function conforms to ISO/IEC 9899:1999(E).