 Main
 Unix Man Pages
|
|
| Developer's Daily | Unix by Example |
| main | java | perl | unix | dev directory | web log |
|
acosh ? inverse hyperbolic cosine function |
#include <math.h> double acosh(double x); |
|
The acosh() function calculates the inverse hyperbolic cosine of x; that is the value whose hyperbolic cosine is x. If x is less than 1.0, acosh() returns not-a-number (NaN) and errno is set. |
|
EDOM |
x is out of range. |
|
SVID 3, POSIX, BSD 4.3, ISO 9899 |
|
asinh(3), atanh(3), cosh(3), sinh(3), tanh(3) |
