Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Calculate the arcsine.
double asin(
double x
);
float asin(
float x
); // C++ only
long double asin(
long double x
); // C++ only
float asinf (
float x
);
Parameters
- x
Value whose arcsine is to be calculated.
Return Value
The asin function returns the arcsine of x in the range –π/2 to π/2 radians.
If x is less than –1 or greater than 1, asin returns an indefinite by default.
Input |
SEH Exception |
Matherr Exception |
|---|---|---|
± ∞ |
INVALID |
_DOMAIN |
± QNAN,IND |
none |
_DOMAIN |
|x|>1 |
INVALID |
_DOMAIN |
Remarks
C++ allows overloading, so you can call overloads of asin. In a C program, asin always takes and returns a double.
Requirements
Routine |
Required header |
|---|---|
asin, asinf |
<math.h> |
Example
For more information, see acos, acosf.