cosh, coshl
Remonter à Math.h - Index
Header File
math.h
Category
Math Routines
Prototype
double cosh(double x);
long double coshl(long double x);
Description
Calculates the hyperbolic cosine of a value.
cosh computes the hyperbolic cosine:
coshl is the long double version; it takes a long double argument and returns a long double result.
Return Value
cosh returns the hyperbolic cosine of the argument.
When the correct value would create an overflow, these functions return the value HUGE_VAL (cosh) or _LHUGE_VAL (coshl) with the appropriate sign, and the global variable errno is set to ERANGE. Error handling for these functions can be modified through the functions _matherr and _matherrl.
Example
#include <stdio.h>
#include <math.h>
int main(void)
{
double result;
double x = 0.5;
result = cosh(x);
printf("The hyperbolic cosine of %lf is %lf\n", x, result);
return 0;
}
Portability
POSIX | Win32 | ANSI C | ANSI C++ | |
---|---|---|---|---|
cosh |
+ |
+ |
+ |
+ |
coshl |
+ |
+ |
+ |