Math trigonometric functions
- math.acos()
- math.acosh()
- math.asin()
- math.asinh()
- math.atan()
- math.atan2()
- math.atanh()
- math.cos()
- math.cosh()
- math.sin()
- math.sinh()
- math.sqrt()
- math.tan()
- math.tanh()
math.cosh()
Computes the hyperbolic cosine of its argument x.
Parameters
x - Floating point value representing a hyperbolic angle.
Return Value
Upon successful completion, this function returns the hyperbolic cosine of x.
If x is math.NAN, a NaN will be returned.
If x is ±0, the value 1.0 will be returned.
If x is math.POS_INFINITY or math.NEG_INFINITY, math.POS_INFINITY will be returned.
If the result would cause an overflow, a range error occurs and math.cosh() will return the value of the macro math.POS_HUGE_VAL.
Errors
If the result would cause an overflow, then fastly.error will be set to ERANGE.
Format
FLOAT
math.cosh(FLOAT x)
Examples
1
2
3
declare local var.fo FLOAT;
set var.fo = math.cosh(0);